Network Platforms - Notice history

Dear Customer,

 Please take note of a Liquid Planned Change scheduled between Klerksdorp - Wolmaransstad on the 19th July 2025 from 08:00 to 15:00. We need to cutover services to new cable at Klerksdorp Metro Manhole, NKLEST_M_059 and NKLEST_M_073. The current cable is damaged, creating losses on the fibre.

IMPACT: Services will switch to alternative route.

Affected Service(s):

CT1 - JB1 - Liquid

  
Reason for Change:

To cutover services to new cable at Klerksdorp Metro Manhole NKLEST_M_059 and NKLEST_M_073. The current cable is damaged creating losses on the fibre.

Implementation Plan

• The cables will be prepared.

• Cut the damaged fibre and splice the cable.

• Continuously confirming with both IP and TX NOC for service restoration.

• Splice the rest of the fibres once all workers are through.

• Final confirmation with both NOC on completion.

Roll Back Plan

• In the event services are affected, technicians on site will re-splice the fibre.

• Confirm service restoration.

Dear Customer,

Please take note of a Liquid Planned Change scheduled between Zuurbekom and Potchefstroom on the 12th July 2025 from 08:00 to 15:00. We need to remake damaged Liquid Joint on N12 Foghville Between Zuurbekom and Potchefstroom. The fibre has high losses.

IMPACT: Services will experience an intermittent 50ms switching hit. 

Affected Service(s):

NLD CT1- JB1 - Liquid

Reason for Change:

To remake damaged Liquid Joint on N12 Foghville Between Zuurbekom and Potchefstroom. The fibre has high losses.

Implementation Plan

Cut into existing Splice closure: Tenio  

If one of the adjacent manholes contains an existing splice, the following minimum procedure needs to be followed:  

·                  Confirm the working fibres for each cable. 

·                  Uncoil the cable slack from the manhole and remove the closure. 

·                  Mount the closure in the splicing vehicle and open the closure. 

·                  Ensure that the GRP of both cables are properly secured.  

·                  Remove the heat shrink seal as follows: 

o        Use a sharp knife and score (partially cut – about two thirds) the heat shrink seal longitudinally 

o        Heat the seal with a gas torch – the heat shrink will split along the score line. 

o        Remove the heat shrink completely with pair pliers while it is hot. 

·                  Prepare the end of the new cable – remember to balance the slack to the existing cable. 

·                  Install the cable also through the Oval port and secure the GPR. 

·                  Cut the fibres in the tubes that contain only spare fires and remove the tube and fibres of the faulty cable side from the trays.  

·                  Splice the same tubes from the new cable onto these fibres. 

·                  When all the tubes that contain spare fibres are spliced, test all the spare fibres from both adjacent PoP’s and create a bi-directional trace to confirm that all splice losses meet the 0.15dB loss requirement. If not, re-splice until it is met. 

·                  If all splice losses are within specification, transfer the working circuits at both POP’s to a pair(s) of the new spare fibres. Please assure that the necessary permissions are obtained prior to this.  

·                  Now at the splice, cut the remaining fibres and splice through on to the new cable. 

·                  Do again bi-directional OTDR tests to confirm that these splice losses are also within the specification. 

·                  Remove old cable completely from the closure. 

·                  Re-seal the oval spigot by using a FOSC OVAL SPIGOT WRAP AROUND SHRINK SEAL KIT. 

·                  Fit closure and manage cable slack as per normal. 

Cut into existing cable: Will be checked. 

·                  Remove cable slack from the manhole. 

·                  Measure 10m slack from the healthy cable entry into the manhole. 

·                  From this point remove 3m of cable sheath. 

·                  Open the oval port of a new Closure and slide the new heat shrink over the looped cable end. 

·                  Push the looped cable end through the oval port. Apply caution not to kink or bend tubes to short as there is still fibre that carries traffic. Secure the GRP on both sides. 

·                  Put the traffic carrying tube one side and cut the tubes with the spare fibres. 

·                  Cut the fibres in the tubes that contain only spare fires and remove the tube and fibres of the faulty cable side. 

·                  Splice the same tubes from the new cable onto these fibres. 

·                  When all the tubes that contain spare fibres are spliced, test all the spare fibres from both adjacent PoP’s and create a bi-directional trace to confirm that all splice losses meet the 0.15dB loss requirement. If not, re-splice until it is met. 

·                  If all splice losses are within specification, transfer the working circuits at both POP’s to a pair(s) of the new spare fibres. Please assure that the necessary permissions are obtained prior to this.  

·                  Now at the splice, cut the remaining fibres and splice through on to the new cable. 

·                  Do again bi-directional OTDR tests to confirm that these splice losses are also within the specification. 

·                  Remove old cable completely from the closure. 

·                  Close oval spigot with heat shrink seal as per normal. 

·                  Fit closure and manage cable slack as per normal. 

3.                Removal of Faulty Cable 

Recover of faulty Fibre cable from ducts preferable by means of blowing. 

4.                Repair New Spare Duct 

Repair the new spare duct by following the same procedure as in clause 4.1.  

Confirm integrity of the repair with a DIT test. 

5.                Closing the Excavation 

Remove the canvas from underneath the ducts. Ensure that all stones are removed from the excavation. Ensure that the area underneath the ducts is levelled with bedding material. 

Ensure the ducts are straight with the correct duct spacing. Fill the area to 100mm above the ducts with padding material and compact lightly. 

Fill the rest of the excavation in layers of 150 – 200mm and compact each layer. 

Reinstate at NGL to as before. 

6.                 Final Testing 

After all splices are completed and all slack managed and store and closures are fitted and excavations is filled, repeat bi-directional OTDR test on all fibres to confirm compliance of the splice losses to specification. 

Repeat DIT test to confirm that ducts were not damaged during compaction.

Roll Back Plan

If the planned cut over fails the splicing team will splice the fibres back to its original state, 2 pairs of fibre are currently splice through on tube no 1 if cut over fail the fibres will be spliced back to their original state.

Dear Customer,

This serves to inform you that SEACOM provider has scheduled a service affecting planned activity. During the event mentioned, your services will be affected as follows:

Activity Main Window:

Start Date & Time: 19:00 /09-Jul 2025

End Date & Time: 05:00/10-Jul 2025

Actual Downtime: 09 Hours 0 Minutes

Reason for Maintenance: SEACOM provider will be conducting Rehabilitation of fibres at hand hole to relieve congestion.

Services Impacted: 

CT1 - JB1 - Seacom

Dear Customer,

Please take note of a Liquid Intelligent Technologies Planned Change scheduled at De Aar-Orange River on the 5th July 2025 from 09:00 to 16:00. We need to splice a fiber joint on 36 core fiber cable in the De Aar - Orange River section.

IMPACT:Services will experience an intermittent 50ms switching hit.

Affected Service:

 CT1 - JB1 - Liquid

Reason for Change:

To splice a fiber joint on 36 core fiber cable in the De Aar - Orange River section.

Implementation plan

To splice a fiber joint on 36 core fiber cable in the De Aar - Orange River section. Long haul fibers will be prioritized.

Rollback Plan:

In the event services are not restoring, the technicians will stop the activity temporarily then follow the below:

•             Re-test and re-splice any damaged fibres to restore the services.

•             Test and confirm with the NOC that all services have restored

Service-Affecting Planned Maintenance Scheduled by SEACOM. During the event mentioned, your services will be affected as follows:

Activity Main Window:
Start Date & Time: 06:00 am /05-Jul 2025
End Date & Time: 18:00 pm /05-Jul 2025
Actual Downtime: 09 Hours 0 Minutes

Reason for Maintenance: To minimize the fiber losses between Pietermaritzburg to DBT Teraco section.

Location: Pietermaritzburg and DBT Teraco

Affected services:

DB1 - JB1 - Seacom

Dear Customer,

Please take note of a Liquid Emergency Change Scheduled ALONG ZUURFONTEIN  NEAR THE BRIDGE AT THE GARAGE on the 22nd June 2025 from 07:00 - 18:00. We need to remake the joint that is in a bad state, causing high losses along Zuurfontein.

IMPACT: Services Highlighted in red will be down for a maximum duration of 10Hrs, other services will experience an intermittent 50ms switching hit.

Affected Services:

CT1 - JB1 - Liquid

Reason For Change

To remake the joint that is in a bad state, causing high losses along Zuurfontein.

Implementation Plan

1.            New cable already installed.

2.            Cables will be prepared after into new fibre joints.

3.            The newly installed cable will be tested for quality use.

4.            Cut the old cable and prepare it into the new joint.

5.            Splice the cable as per service priority.

6.            Continuously confirming with both IP NOC for service restoration

7.            Splice the rest of the fibres once all workers are through.

8.            Final confirmation with both NOC on completion.

Rollback Plan:

System(s) will be cut on new cable as per priority and service affecting.

OSP will continuously confirm during and after the cut over with both IP and SDH NOC.

Should there be any system which is still down after the planned work execution, then it will be treated as fault.

Fibre fault diagnose process will kick in to restore the affected services. End to end test will be done to check fibre conditions.

The test will be performed between the applicable POP and the jointing site. OSP FST will ensure that all links are up before parting site.

Dear Customer,

This serves to inform you that Fibreco has scheduled a service affecting planned activity. During the event mentioned, your services will be affected as follows:

Main Activity Window:
Start Date & Time: 08:00/31st May 2025
End Date & Time: 18:00 /31st May 2025

Backup Activity Window:
Start Date & Time: 08:00 /01st June 2025
End Date & Time: 18:00/01st June 2025
Expected Downtime: 08 hours

Services Affected:

CT1 - JB1 - FibreCo

Overview : Engineers will be performing troubleshooting with Firewall vendor on the HA set of firewalls.

Impact : All services traversing the firewalls will be affected.

Maintenance Start : 28 May 2025 23:00

Maintenance End : 29 May 2025 05:00

Risk : High
Expected Downtime : 2 - 5 minutes

Services Affected : All Voice services

Regards

Network Platforms