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SERVICE
ANNOUNCEMENTS

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July 2022


Urgent Network Maintenance

Date:

28 July 2022

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Tampines and Bukit Panjang CO

Remarks:

Minimal service impact expected.

M1 Maintenance Activity

Date:

17 July 2022

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Wireless@SG / Cloud Servers / Shared Hosting / Keppel Hosting

Remarks:

Routine and preventive maintenance

Planned Network Maintenance

Date:

17 July 2022

Time:

00:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Wireless@SGx Service

Remarks:

Intermittent service disruption of Wireless@SGx service during the maintenance window.

M1 Maintenance Activity

Date:

16 July 2022

Time:

01:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Jurong West Exchange

Remarks:

All services will be interrupted for about 5-15minutes during the maintenance work

M1 Maintenance Activity

Date:

14 July 2022

Time:

01:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Jurong West Exchange

Remarks:

All services will be interrupted for about 5-15minutes during the maintenance work

M1 Maintenance Activity

Date:

13 July 2022

Time:

01:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Jurong West Exchange

Remarks:

All services will be interrupted for about 5-15minutes during the maintenance work

Planned Network Maintenance

Date:

10 July 2022

Time:

00:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Wireless@SGx Service

Remarks:

Intermittent service disruption of Wireless@SGx service during the maintenance window.

M1 Maintenance Activity

Date:

09 July 2022

Time:

01:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Hougang Exchange

Remarks:

All services will be interrupted for about 5-15minutes during the maintenance work

Maintenance Activity

Date:

07 July 2022

Time:

00:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Wireless@SGx Service

Remarks:

Intermittent service disruption of Wireless@SGx service during the maintenance window.

M1 Maintenance Activity

Date:

06 July 2022

Time:

01:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Tuas Link Exchange

Remarks:

All services will be interrupted for about 5-15minutes during the maintenance work

Planned Network Maintenance

Date:

03 July 2022

Time:

00:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Wireless@SGx Service

Remarks:

Intermittent service disruption of Wireless@SGx service during the maintenance window.

Maintenance Activity

Date:

02 July 2022

Time:

00:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Wireless@SGx Service

Remarks:

Intermittent service disruption of Wireless@SGx service during the maintenance window.

June 2022


M1 Maintenance Activity

Date:

28 June 2022

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Wireless@SGx OTP Request

Remarks:

Intermittently, SMS OTP may not deliver during ESSA setup, if end user chooses M1 as operator in the setup process.

M1 Maintenance Activity

Date:

26 June 2022

Time:

02:00 hrs to 04:00 hrs

Affected Exchanges/Areas:

Bedok Exchange

Remarks:

ll service will be interrupted during the maintenance work

Planned Network Maintenance

Date:

26 June 2022

Time:

00:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Wireless@SGx Service

Remarks:

Intermittent disruption of Wireless@SGx service during the maintenance window.

Planned Network Maintenance

Date:

25 June 2022

Time:

00:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Wireless@SGx Service

Remarks:

Intermittent disruption of Wireless@SGx service during the maintenance window.

Fault Rectification

Date:

24 June 2022

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

All CO

Remarks:

Minimal service impact expected. Service will switch/route to protection/backup if necessary.

Planned Network Maintenance

Date:

24 June 2022

Time:

01:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

All CO

Remarks:

Minimal service impact expected. Service will switch/route to protection/backup if necessary.

M1 Urgent Maintenance Activity

Date:

23 June 2022

Time:

01:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

All CO

Remarks:

Minimal service impact expected. Service will switch/route to protection/backup if necessary.

Planned Network Maintenance

Date:

23 June 2022

Time:

01:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

All CO

Remarks:

Minimal service impact expected. Service will switch/route to protection/backup if necessary.

Fault Rectification

Date:

22 June 2022

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Ayer Rajah, Tampines CO

Remarks:

Minimal service impact expected. Service will switch/route to protection/backup if necessary.

Planned Network Maintenance

Date:

20 June 2022

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Traffic will failover to Router on Equinix.

Remarks:

Minimal impact to Internet access for all M1Net Customers

Planned Network Maintenance

Date:

19 June 2022

Time:

00:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Wireless@SGx Service

Remarks:

Intermittent disruption of Wireless@SGx service during the maintenance window.

Planned Network Maintenance

Date:

19 June 2022

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Wireless@SGx Service

Remarks:

Wireless@SG / Cloud Servers / Shared Hosting

Maintenance Activity

Date:

18 June 2022

Time:

02:00 hrs to 04:00 hrs

Affected Exchanges/Areas:

All M1 Internet Customers

Remarks:

Minimal impact to Internet access for all M1Net Customers during traffic failover.

Planned Network Maintenance

Date:

18 June 2022

Time:

00:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Wireless@SGx Service

Remarks:

Intermittent disruption of Wireless@SGx service during the maintenance window.

Planned Network Maintenance

Date:

17 June 2022

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

East CO

Remarks:

Minimal service impact expected. Service will switch/route to protection/backup if necessary.

Planned Network Maintenance

Date:

14 June 2022

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Bukit Panjang CO, Tampines CO

Remarks:

Minimal service impact expected. Service will switch/route to protection/backup if necessary.

Planned Network Maintenance

Date:

12 June 2022

Time:

00:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Wireless@SGx Service

Remarks:

Intermittent disruption of Wireless@SGx service during the maintenance window.

Planned Network Maintenance

Date:

11 June 2022

Time:

00:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Wireless@SGx Service

Remarks:

Intermittent disruption of Wireless@SGx service during the maintenance window.

May 2022


M1 Urgent Maintenance Activity

Date:

25 May 2022

 

Time:

01:00 hrs to 05:00 hrs

Impact:

Hougang Exchange

Remarks :

Minimal service impact expected. Service will switch/route to protection/backup if necessary

Maintenance Activity

Date:

19 May 2022

 

Time:

02:00 hrs to 05:00 hrs

Impact:

M1 SIM card user (on EAP-SIM/AKA authentication) may face issue

Remarks :

The impact will be on the M1 SIM card user trying to connect to Wireless@SGx. Only M1 SIM card user who are trying to authenticate or re-authenticate after session time out may face issue during the maintenance period. Non M1 SIM card user and user already authenticated before the maintenance session will not face any issue

Maintenance Activity

Date:

05 May 2022

 

Time:

02:00 hrs to 05:00 hrs

Impact:

M1 SIM card user (on EAP-SIM/AKA authentication) may face issue

Remarks :

The impact will be on the M1 SIM card user trying to connect to Wireless@SGx. Only M1 SIM card user who are trying to authenticate or re-authenticate after session time out may face issue during the maintenance period. Non M1 SIM card user and user already authenticated before the maintenance session will not face any issue

April 2022


M1 Maintenance Activity

Date:

28 April 2022

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Orchard, Jurong West, Ayer Rajah CO

Remarks:

Minimal service impact expected. Service will route to backup if necessary.

M1 DNS Maintenance Activity

Date:

27 April 2022

Time:

00:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

All

Remarks:

No Service Impact

M1 Maintenance Activity

Date:

27 April 2022

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Tampines, Hougang CO

Remarks:

Minimal service impact expected. Service will route to backup if necessary.

M1 DNS Maintenance Activity

Date:

24 April 2022

Time:

00:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

All

Remarks:

No Service Impact

M1 DNS Maintenance Activity

Date:

20 April 2022

Time:

00:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

All

Remarks:

No Service Impact

M1 DNS Maintenance Activity

Date:

17 April 2022

Time:

00:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

All

Remarks:

No Service Impact

M1 Urgent Maintenance Activity

Date:

14 April 2022

Time:

01:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Jurong West CO

Remarks:

Minimal service impact expected. Service will route to backup if necessary.

M1 Urgent Maintenance Activity

Date:

13 April 2022

Time:

01:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Bukit Panjang CO

Remarks:

Minimal service impact expected. Service will route to backup if necessary.

March 2022

M1 Urgent Maintenance Activity

Date:

30 Mar 2022

 

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

HOUGANG EXCHANGE

Remarks:

Minimal service impact expected

M1 Maintenance Activity

Date:

26 Mar 2022

 

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

All M1Net Customers

Remarks:

Minimal impact to Internet access

Maintenance Activity

Date:

26 Mar 2022

 

Time:

00:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Wireless@SGx Service

Remarks:

Intermittent disruption of Wireless@SGx service during the maintenance window.

M1 Maintenance Activity

Date:

25 Mar 2022

 

Time:

02:30 hrs to 05:00 hrs

Affected Exchanges/Areas:

Bukit Panjang Exchange

Remarks:

Minimal impact to All services

M1 Maintenance Activity

Date:

24 Mar 2022

 

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Jurong West Exchange

Remarks:

Minimal impact to All services

Maintenance Activity

Date:

19 Mar 2022

 

Time:

00:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Wireless@SGx Service

Remarks:

Intermittent disruption of Wireless@SGx service during the maintenance window.

M1 Maintenance Activity

Date:

17 Mar 2022

 

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Bukit Panjang Exchange

Remarks:

Minimal impact expected for all services.

M1 Urgent Maintenance Activity

Date:

12 Mar 2022

 

Time:

01:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Jurong West Exchange

Remarks:

Minimal service impact expected. Service will route to backup if necessary.

Maintenance Activity

Date:

12 Mar 2022

 

Time:

00:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Wireless@SGx Service

Remarks:

Intermittent disruption of Wireless@SGx service during the maintenance window.

M1 Urgent Maintenance Activity

Date:

9 Mar 2022

 

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

East Exchange

Remarks:

Minimal service impact expected. Service will switch/route to protection/backup if necessary.

M1 Network Maintenance Activity

Date:

8 Mar 2022

 

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Software Upgrade

Remarks:

Intermittent interruption on Internet

M1 Network Maintenance Activity

Date:

4 Mar 2022

 

Time:

02:00 hrs to 04:00 hrs

Affected Exchanges/Areas:

Jurong West CO , East CO and Bedok CO

Remarks:

All services will be affected

M1 Maintenance Activity

Date:

2 Mar 2022

 

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Wireless@SGx OTP Request

Remarks:

Intermittently, SMS OTP may not deliver during ESSA setup, if end user chooses M1 as operator in the setup process.

M1 Network Maintenance Activity

Date:

2 Mar 2022

 

Time:

02:00 hrs to 04:00 hrs

Affected Exchanges/Areas:

Tampines CO, AngMoKio CO

Remarks:

All services will be affected

February 2022


Maintenance Activity

Date:

26 Feb 2022

Time:

00:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Wireless@SGx Service

Remarks:

Intermittent disruption of Wireless@SGx service during the maintenance window.

Maintenance Activity

Date:

25 Feb 2022

Time:

01:00 hrs to 04:00 hrs

Affected Exchanges/Areas:

L3VPN APN

Remarks:

No service impact expected

M1 Maintenance Activity

Date:

25 Feb 2022

Time:

02:00 hrs to 04:00 hrs

Affected Exchanges/Areas:

Ayer Rajah Exchange, Hougang Exchange

Remarks:

All services will be affected

M1 Maintenance Activity

Date:

23 Feb 2022

Time:

02:00 hrs to 04:00 hrs

Affected Exchanges/Areas:

Bukit Panjang Exchange, Orchard Exchange

Remarks:

All services will be affected

Maintenance Activity

Date:

21 Feb 2022

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Bedok Exchange, East Exchange

Remarks:

Minimal service impact expected. Service will route to backup if necessary.

Maintenance Activity

Date:

19 Feb 2022

Time:

00:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Wireless@SGx Service

Remarks:

Intermittent disruption of Wireless@SGx service during the maintenance window.

Planned Maintenance Activity

Date:

17 Feb 2022

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Wireless@SGx OTP Request

Remarks:

Intermittently, SMS OTP may not deliver during ESSA setup, if end user chooses M1 as operator in the setup process.

M1 Urgent Maintenance Activity

Date:

15 Feb 2022

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

L3VPN APN

Remarks:

No service impact

M1 Maintenance Activity

Date:

14 Feb 2022

Time:

02:00 hrs to 04:00 hrs

Affected Exchanges/Areas:

Tuas Exchange

Remarks:

All services will be affected

Maintenance Activity

Date:

12 Feb 2022

Time:

00:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Wireless@SGx Service

Remarks:

Intermittent disruption of Wireless@SGx service during the maintenance window.

M1 Urgent Maintenance Activity

Date:

11 Feb 2022

Time:

01:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Orchard

Remarks:

Minimal service impact expected. Service will switch/route to protection/backup if necessary.

M1 Network Maintenance Activity

Date:

1 Feb 2022

Time:

01:00 hrs to 04:00 hrs

Affected Exchanges/Areas:

L3VPN APN

Remarks:

Intermittent connection to L3VPN APN service

January 2022


Maintenance Activity

Date:

29 Jan 2022

Time:

00:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Wireless@SGx Service

Remarks:

Intermittent disruption of Wireless@SGx service during the maintenance window.

Maintenance Activity

Date:

27 Jan 2022

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Orchard, Jurong West, Ayer Rajah CO

Remarks:

Minimal service impact expected. Service will route to backup if necessary.

Maintenance Activity

Date:

26 Jan 2022

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Tampines, Hougang CO

Remarks:

Minimal service impact expected. Service will route to backup if necessary.

Maintenance Activity

Date:

25 Jan 2022

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Jurong West CO

Remarks:

Minimal service impact expected. Service will route to backup if necessary.

M1 Urgent Maintenance Activity

Date:

24 Jan 2022

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

East Exchange, Jurong West Exchange

Remarks:

Minimal service impact expected. Service will route to backup if necessary.

M1 Urgent Maintenance Activity

Date:

23 Jan 2022

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Ang Mo Kio Exchange, Bedok Exchange

Remarks:

Minimal service impact expected. Service will route to backup if necessary.

M1 Urgent Maintenance Activity

Date:

22 Jan 2022

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Ayer Rajah Exchange, Hougang Exchange, Tampines Exchange

Remarks:

Minimal service impact expected. Service will route to backup if necessary.

Maintenance Activity

Date:

22 Jan 2022

Time:

00:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Wireless@SGx Service

Remarks:

Intermittent disruption of Wireless@SGx service during the maintenance window.

Maintenance Activity

Date:

21 Jan 2022

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Tampines, Bukit Panjang and Ayer rajah CO

Remarks:

Minimal service impact expected. Service will route to backup if necessary.

Maintenance Activity

Date:

20 Jan 2022

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Jurong West CO

Remarks:

Minimal service impact expected. Service will route to backup if necessary.

Maintenance Activity

Date:

19 Jan 2022

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Ayer Rajah CO

Remarks:

Minimal service impact expected. Service will route to backup if necessary.

Maintenance Activity

Date:

18 Jan 2022

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

All Exchange

Remarks:

Minimal service impact expected. Service will switch/route to protection/backup if necessary.

Maintenance Activity

Date:

17 Jan 2022

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

All Exchange

Remarks:

Minimal service impact expected. Service will switch/route to protection/backup if necessary.

Maintenance Activity

Date:

15 Jan 2022

Time:

00:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Wireless@SGx Service

Remarks:

Intermittent disruption of Wireless@SGx service during the maintenance window.

Maintenance Activity

Date:

13 Jan 2022

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

All Exchange

Remarks:

Minimal service impact expected. Service will switch/route to protection/backup if necessary.

Maintenance Activity

Date:

12 Jan 2022

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Bedok Exchange

Remarks:

Minimal service impact expected. Service will switch/route to protection/backup if necessary.

December 2021


URGENT Internet Router Maintenance

Date:

16 Dec 2021

Time:

00:00 hrs to 04:00 hrs

Affected Exchanges/Areas:

All

Remarks:

Brief internet interruption during router reboot and while traffic failover.

M1 Urgent Maintenance Activity

Date:

15 Dec 2021

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Tampines CO

Remarks:

Minimal service impact expected. Service will route to backup if necessary.

M1 Urgent Maintenance Activity

Date:

14 Dec 2021

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Ang Mo Kio CO

Remarks:

Minimal service impact expected. Service will route to backup if necessary.

M1 Urgent Maintenance Activity

Date:

13 Dec 2021

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

All CO

Remarks:

Minimal service impact expected. Service will route to backup if necessary.

M1 Urgent Maintenance Activity

Date:

10 Dec 2021

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Jurong West CO

Remarks:

Minimal service impact expected. Service will route to backup if necessary.

RSP PE Router Maintenance Activity

Date:

9 Dec 2021

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Jurong, Orchard, Tuas, Bukit Panjang, Ayer Rajah, Hougang , Tampines CO

Remarks:

Intermittent service disruption for Internet, SIP and VOIP services during maintenance window.

M1 Urgent Maintenance Activity

Date:

9 Dec 2021

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

East CO

Remarks:

Minimal service impact expected. Service will route to backup if necessary.

M1 Network Maintenance Activity

Date:

9 Dec 2021

Time:

02:00 hrs to 04:00 hrs

Affected Exchanges/Areas:

Jurong West CO

Remarks:

All services will be affected.

M1 Urgent Maintenance Activity

Date:

8 Dec 2021

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Orchard CO

Remarks:

Minimal service impact expected. Service will route to backup if necessary.

M1 Urgent Maintenance Activity

Date:

7 Dec 2021

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Hougang CO

Remarks:

Minimal service impact expected. Service will route to backup if necessary.

M1 Network Maintenance Activity

Date:

7 Dec 2021

Time:

02:00 hrs to 04:00 hrs

Affected Exchanges/Areas:

AngMoKio CO, Orchard CO

Remarks:

All services will be affected.

M1 Network Maintenance Activity

Date:

2 Dec 2021

Time:

02:00 hrs to 04:00 hrs

Affected Exchanges/Areas:

Ayer Rajah CO, Tuas CO

Remarks:

All services will be affected.

November 2021

Migration Activity

Date:

30 Nov 2021

Time:

01:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Bedok Exchange

Remarks:

Service will be interrupted during the maintenance work.

Maintenance Activity

Date:

30 Nov 2021

 

Time:

02:00 hrs- 05:00 hrs

Affected Exchanges:

Upgrade PE router and board expansion

Remarks:

Service disruption of around 30minutes during the maintenance window.

M1 Network Maintenance Activity

Date:

30 Nov 2021

 

Time:

02:00 hrs- 04:00 hrs

Affected Exchanges:

Tampines CO, East CO

Remarks:

All services will be affected

M1 Urgent Maintenance Activity

Date:

28 Nov 2021

Time:

00:00 hrs to 04:00 hrs

Affected Exchanges/Areas:

Internet Service.

Remarks:

Minimal service impact expected during router reboot and traffic failover.

Maintenance Activity

Date:

27 Nov 2021

 

Time:

00:00 hrs- 05:00 hrs

Affected Exchanges:

Wireless@SGx Service

Remarks:

Intermittent disruption of Wireless@SGx service during the maintenance window.

Migration Activity

Date:

26 Nov 2021

 

Time:

01:00 hrs- 05:00 hrs

Affected Exchanges:

Ang Mo Kio Exchange

Remarks:

Minimum Service impact expected.

Maintenance Activity

Date:

25 Nov 2021

 

Time:

02:00 hrs- 05:00 hrs

Affected Exchanges:

Upgrade PE router and board expansion

Remarks:

Service disruption of around 30minutes during the maintenance window.

M1 Network Maintenance Activity

Date:

25 Nov 2021

 

Time:

02:00 hrs- 04:00 hrs

Affected Exchanges:

Bedok CO, Hougang CO

Remarks:

All services will be affected

Migration Activity

Date:

24 Nov 2021

 

Time:

01:00 hrs- 05:00 hrs

Affected Exchanges:

Jurong , Tuas and Hougang Exchange

Remarks:

Minimum Service impact expected

Maintenance Activity

Date:

20 Nov 2021

 

Time:

00:00 hrs- 05:00 hrs

Affected Exchanges:

Wireless@SGx Service

Remarks:

Intermittent disruption of Wireless@SGx service during the maintenance window.

M1 Urgent Maintenance Activity

Date:

15 Nov 2021

 

Time:

02:00 hrs- 05:00 hrs

Affected Exchanges:

All

Remarks:

Minimal service impact expected

Maintenance Activity

Date:

13 Nov 2021

 

Time:

00:00 hrs- 05:00 hrs

Affected Exchanges:

Wireless@SGx Service

Remarks:

Intermittent disruption of Wireless@SGx service during the maintenance window.

M1 Network Maintenance Activity

Date:

8 Nov 2021

 

Time:

02:00 hrs- 04:00 hrs

Affected Exchanges:

Bukit Panjang CO

Remarks:

All services will be affected

Maintenance Activity

Date:

6 Nov 2021

 

Time:

00:00 hrs- 05:00 hrs

Affected Exchanges:

Wireless@SGx Service

Remarks:

Intermittent disruption of Wireless@SGx service during the maintenance window.

October 2021


M1 Maintenance Activity

Date:

29 Oct 2021

Time:

01:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Ang Mo Kio Exchange

Remarks:

All services will be interrupted for about 5-15 minutes during the maintenance work

M1 Maintenance Activity

Date:

27 Oct 2021

Time:

01:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

East Exchange

Remarks:

All services will be interrupted for about 5-15 minutes during the maintenance work

M1 Maintenance Activity

Date:

26 Oct 2021

Time:

01:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

East Exchange

Remarks:

All services will be interrupted for about 5-15 minutes during the maintenance work

Planned Network Maintenance

Date:

23 Oct 2021

Time:

00:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Wireless@SGx Service

Remarks:

Intermittent disruption of Wireless@SGx service during the maintenance window.

M1 Maintenance Activity

Date:

22 Oct 2021

Time:

01:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

East Exchange

Remarks:

All services will be interrupted for about 5-15 minutes during the maintenance work

Maintenance Activity

Date:

21 Oct 2021

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Tampines, Bukit Panjang and Ayer Rajah Exchange

Remarks:

Minimal service impact expected. Service will switch/route to protection/backup if necessary.

M1 Maintenance Activity

Date:

20 Oct 2021

Time:

01:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

East Exchange

Remarks:

All services will be interrupted for about 5-15 minutes during the maintenance work

M1 Maintenance Activity

Date:

19 Oct 2021

Time:

01:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Ayer Rahaj Exchange

Remarks:

All services will be interrupted for about 5-15 minutes during the maintenance work

Maintenance Activity

Date:

18 Oct 2021

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Tampines and Hougang Exchange

Remarks:

Minimal service impact expected. Service will switch/route to protection/backup if necessary.

Planned Network Maintenance

Date:

16 Oct 2021

Time:

00:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Wireless@SGx Service

Remarks:

Intermittent disruption of Wireless@SGx service during the maintenance window.

M1 Maintenance Activity

Date:

15 Oct 2021

Time:

01:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Ayer Rahaj Exchange

Remarks:

All services will be interrupted for about 5-15 minutes during the maintenance work

Maintenance Activity

Date:

14 Oct 2021

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Orchard, Jurong West and Ayer Rajah Exchange

Remarks:

Minimal service impact expected. Service will switch/route to protection/backup if necessary.

M1 Maintenance Activity

Date:

13 Oct 2021

Time:

01:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Tampines and Ayer Rahaj Exchange

Remarks:

All services will be interrupted for about 5-15 minutes during the maintenance work

M1 Maintenance Activity

Date:

12 Oct 2021

Time:

01:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Tampines Exchange

Remarks:

All services will be interrupted for about 5-15 minutes during the maintenance work

Planned Network Maintenance

Date:

9 Oct 2021

Time:

00:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Wireless@SGx Service

Remarks:

Intermittent disruption of Wireless@SGx service during the maintenance window.

SBC Software Upgrade

Date:

8 Oct 2021

Time:

00:00 hrs to 05:00 hrs

Remarks:

Ongoing SIP calls will be dropped during switchover. Downtime is estimated at one (1) minute. No impact to new calls.

M1 Maintenance Activity

Date:

8 Oct 2021

Time:

01:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Tampines Exchange

Remarks:

All services will be interrupted for about 5-15 minutes during the maintenance work

Migration Activity

Date:

7 Oct 2021

Time:

02:00 hrs to 04:00 hrs

Affected Exchanges/Areas:

East and Bedok Exchange

Remarks:

Intermittent interruption on all services during maintenance period.

Maintenance Activity

Date:

7 Oct 2021

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Hougang and Ang Mo Kio Exchange

Remarks:

Minimal service impact expected. Service will switch/route to protection/backup if necessary.

M1 Maintenance Activity

Date:

6 Oct 2021

Time:

01:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Tampines Exchange

Remarks:

All services will be interrupted for about 5-15 minutes during the maintenance work

M1 Maintenance Activity

Date:

5 Oct 2021

Time:

01:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Tampines Exchange

Remarks:

All services will be interrupted for about 5-15 minutes during the maintenance work

Maintenance Activity

Date:

4 Oct 2021

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Orchard and Jurong West Exchange

Remarks:

Minimal service impact expected. Service will switch/route to protection/backup if necessary.

Planned Network Maintenance

Date:

2 Oct 2021

Time:

00:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Wireless@SGx Service

Remarks:

Intermittent disruption of Wireless@SGx service during the maintenance window.

M1 Maintenance Activity

Date:

1 Oct 2021

Time:

01:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Orchard Exchange

Remarks:

All services will be interrupted for about 5-15 minutes during the maintenance work

September 2021


Maintenance Activity

Date:

30 Sep 2021

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Ang Mo Kio Exchange

Remarks:

Minimal service impact expected. Service will switch/route to protection/backup if necessary.

Migration Activity

Date:

29 Sep 2021

Time:

01:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Orchard Exchange

Remarks:

All services will be interrupted for about 5-15minutes only during the maintenance work.

Migration Activity

Date:

28 Sep 2021

Time:

01:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Orchard Exchange

Remarks:

All services will be interrupted for about 5-15minutes only during the maintenance work.

Planned Network Maintenance

Date:

25 Sep 2021

Time:

00:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Wireless@SGx Service

Remarks:

Intermittent service disruption of Wireless@SGx services during the maintenance window

Migration Activity

Date:

24 Sep 2021

Time:

01:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Orchard Exchange

Remarks:

All services will be interrupted for about 5-15minutes only during the maintenance work.

Maintenance Activity

Date:

23 Sep 2021

Time:

02:00 hrs to 04:00 hrs

Affected Exchanges/Areas:

Hougang and Bedok Exchange

Remarks:

Intermittent interruption on all services during maintenance period.

Maintenance Activity

Date:

23 Sep 2021

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

East, Tampines and Ayer Rajah Exchange

Remarks:

Minimal service impact expected. Service will switch/route to protection/backup if necessary.

Migration Activity

Date:

22 Sep 2021

Time:

01:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Bukit Panjang Exchange

Remarks:

All services will be interrupted for about 5-15minutes only during the maintenance work.

Migration Activity

Date:

21 Sep 2021

Time:

01:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Bukit Panjang Exchange

Remarks:

All services will be interrupted for about 5-15minutes only during the maintenance work.

Maintenance Activity

Date:

20 Sep 2021

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Bedok and Tuas Exchange

Remarks:

Minimal service impact expected. Service will switch/route to protection/backup if necessary.

Planned Network Maintenance

Date:

18 Sep 2021

Time:

00:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Wireless@SGx Service

Remarks:

Intermittent service disruption of Wireless@SGx services during the maintenance window

Migration Activity

Date:

17 Sep 2021

Time:

01:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Bukit Panjang Exchange

Remarks:

All services will be interrupted for about 5-15minutes only during the maintenance work.

Maintenance Activity

Date:

16 Sep 2021

Time:

02:00 hrs to 04:00 hrs

Affected Exchanges/Areas:

Jurong West and Tuas Exchange

Remarks:

Intermittent interruption on all services during maintenance period.

Maintenance Activity

Date:

16 Sep 2021

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

East, Bedok and Ang Mo Kio Exchange

Remarks:

Minimal service impact expected. Service will switch/route to protection/backup if necessary.

Maintenance Activity

Date:

15 Sep 2021

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

All

Remarks:

Minimal service impact expected. Service will switch/route to protection/backup if necessary.

Migration Activity

Date:

15 Sep 2021

Time:

01:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Bukit Panjang Exchange

Remarks:

All services will be interrupted for about 5-15minutes only during the maintenance work.

Migration Activity

Date:

14 Sep 2021

Time:

01:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Bukit Panjang Exchange

Remarks:

All services will be interrupted for about 5-15minutes only during the maintenance work.

Maintenance Activity

Date:

13 Sep 2021

Time:

02:00 hrs to 04:00 hrs

Affected Exchanges/Areas:

East and Ang Mo Kio Exchange

Remarks:

Intermittent interruption on all services during maintenance period.

Maintenance Activity

Date:

13 Sep 2021

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Tampines, Orchard, Tuas and Ayer Rajah Exchange

Remarks:

Minimal service impact expected. Service will switch/route to protection/backup if necessary.

Maintenance Activity

Date:

12 Sep 2021

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Bukit Panjang Exchange

Remarks:

Minimal service impact expected. Service will switch/route to protection/backup if necessary.

Planned Network Maintenance

Date:

11 Sep 2021

Time:

00:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Wireless@SGx Service

Remarks:

Intermittent service disruption of Wireless@SGx services during the maintenance window

Migration Activity

Date:

10 Sep 2021

Time:

01:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Bukit Panjang Exchange

Remarks:

All services will be interrupted for about 5-15minutes only during the maintenance work.

Maintenance Activity

Date:

9 Sep 2021

Time:

02:00 hrs to 04:00 hrs

Affected Exchanges/Areas:

Ayer Rajah and Tampines Exchange

Remarks:

Intermittent interruption on all services during maintenance period.

Maintenance Activity

Date:

9 Sep 2021

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Bedok, Jurong West and Orchard Exchange

Remarks:

Minimal service impact expected. Service will switch/route to protection/backup if necessary.

Migration Activity

Date:

8 Sep 2021

Time:

01:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Bukit Panjang Exchange

Remarks:

All services will be interrupted for about 5-15minutes only during the maintenance work.

Migration Activity

Date:

7 Sep 2021

Time:

01:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Bukit Panjang Exchange

Remarks:

All services will be interrupted for about 5-15minutes only during the maintenance work.

Maintenance Activity

Date:

6 Sep 2021

Time:

02:00 hrs to 04:00 hrs

Affected Exchanges/Areas:

Bukit Panjang and Orchard Exchange

Remarks:

Intermittent interruption on all services during maintenance period.

Maintenance Activity

Date:

6 Sep 2021

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Tampines Exchange

Remarks:

Minimal service impact expected. Service will switch/route to protection/backup if necessary.

Migration Activity

Date:

3 Sep 2021

Time:

01:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Jurong West Exchange

Remarks:

All services will be interrupted for about 5-15minutes only during the maintenance work.

Maintenance Activity

Date:

2 Sep 2021

Time:

01:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

All Exchange

Remarks:

Minimal service impact expected. Service will switch/route to protection/backup if necessary.

Maintenance Activity

Date:

2 Sep 2021

Time:

02:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

All Exchange

Remarks:

Minimal service impact expected. Service will switch/route to protection/backup if necessary.

August 2021


M1 Maintenance Activity

Date:

31 August 2021

Time:

01:00hrs to 05:00hrs

Affected Exchanges/Areas:

Jurong West Exchange

Remarks:

All services will be interrupted for about 5-15minutes during the maintenance work

M1 Maintenance Activity

Date:

30 August 2021

Time:

02:00hrs to 05:00hrs

Affected Exchanges/Areas:

All Exchange

Remarks:

Minimal service impact expected. Service will switch/route to protection/backup if necessary.

Planned Network Maintenance

Date:

28 Aug 2021

Time:

00:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Wireless@SGx Service

Remarks:

Intermittent service disruption of Wireless@SGx service during the maintenance window.

M1 Maintenance Activity

Date:

27 August 2021

Time:

01:00hrs to 05:00hrs

Affected Exchanges/Areas:

Jurong West Exchange

Remarks:

All services will be interrupted for about 5-15minutes during the maintenance work

Maintenance Activity

Date:

25 August 2021

Time:

02:00hrs to 05:00hrs

Affected Exchanges/Areas:

Jurong West Exchange

Remarks:

Minimal service impact expected. Service will switch/route to protection/backup if necessary.

M1 Maintenance Activity

Date:

25 August 2021

Time:

01:00hrs to 05:00hrs

Affected Exchanges/Areas:

Jurong West Exchange

Remarks:

All services will be interrupted for about 5-15minutes during the maintenance work

M1 Maintenance Activity

Date:

24 August 2021

Time:

01:00hrs to 05:00hrs

Affected Exchanges/Areas:

Jurong West Exchange

Remarks:

All services will be interrupted for about 5-15minutes during the maintenance work

Planned Network Maintenance

Date:

22 August 2021

Time:

02:00hrs to 05:00hrs

Affected Exchanges/Areas:

Wireless@SG / Cloud Servers / Shared Hosting / Keppel Hosting

Remarks:

Routine and preventive maintenance

Planned Network Maintenance

Date:

21 Aug 2021

Time:

00:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Wireless@SGx Service

Remarks:

Intermittent service disruption of Wireless@SGx service during the maintenance window.

Planned Network Maintenance

Date:

14 Aug 2021

Time:

00:00 hrs to 02:00 hrs

Affected Exchanges/Areas:

Wireless@SGx Service

Remarks:

Intermittent service disruption of Wireless@SGx service during the maintenance window.

Planned Network Maintenance

Date:

4 August 2021

Time:

02:00hrs to 05:00hrs

Affected Exchanges/Areas:

Ayer Rajah and Hougang Exchange

Remarks:

Minimal disruption for all services.

Urgent Network Maintenance

Date:

11 August 2021

Time:

02:00hrs to 05:00hrs

Affected Exchanges/Areas:

Jurong West CO

Remarks:

Minimal service impact expected

Planned Network Maintenance

Date:

7 Aug 2021

Time:

00:00 hrs to 05:00 hrs

Affected Exchanges/Areas:

Wireless@SGx Service

Remarks:

Intermittent service disruption of Wireless@SGx service during the maintenance window.

Planned Network Maintenance

Date:

4 August 2021

Time:

02:00hrs to 05:00hrs

Affected Exchanges/Areas:

Bedok Exchange

Remarks:

Minimal service impact expected. Service will switch/route to protection/backup if necessary.