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Provision of Partial Baseband Private Circuits - Change-over Considerations

Provision of Partial Baseband Private Circuits - Change-over Considerations. Mike Ainger Transmission Design & Planning Manager Racal Telecom

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Provision of Partial Baseband Private Circuits - Change-over Considerations

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  1. Provision of Partial Baseband Private Circuits - Change-over Considerations Mike Ainger Transmission Design & Planning Manager Racal Telecom The contents of this document are for discussion only, and do not represent or imply a commitment by any company to implement of supply any of the technology, processes or products described

  2. Background • The order process is likely to result in one of two different implementation scenarios: • New PBPC over previously spare copper pair • New PBLC over copper pair in use for Telephony • In the first scenario there is no requirement for a live service change-over • In the second a live service change-over must be executed • This will in most cases be combined with a number port

  3. Streamlining the Change-over • It is in all parties interest that this change-over should be as efficient and interruption-less as possible: • Customer wants minimum service disruption • BT and OLO want to minimise skilled resources, in particular wasted resources co-ordinating timed activities • Public safety consideration - minimum interruption to emergency access

  4. Possible Methods (1) • BT installs NT 2000 and test access x-connect as a preparatory step • Also gives opportunity to label any BT owned CPE to avoid accidental recovery by OLO / customer Property of BT 1 2 CPE 0171 904 5710 2w Circuit MDF NT 2000 Test Access Cross-Connect BT Switch

  5. Possible Methods (2) • Number Transfer to the incoming operator to be implemented in advance of the PBPC implementation • Timed visit to port number could be done when OLO installs (but does not bring into service) DSL equipment Property of BT 1 2 2w Circuit MDF Test Access Cross-Connect Property of OLO BT Switch DSL

  6. Possible Methods (3) • If BT could now use the Test Access Cross-connect to remotely transfer the line to the incoming OLO: • Timed visit would be eliminated • If trouble experienced on change-over then reversion is simple - avoids risk of long periods without emergency access • First the OLO Equipment would be connected to the Test Access Cross-Connect Property of BT 1 DSL AM 2 2w Circuit MDF OLO Equipment Test Access Cross-Connect Property of OLO DSL BT Switch

  7. Possible Methods (4) • BT would then remotely switch-over, on request from the OLO, when the OLO technician is at the customer premises • The OLO then commission the new service, ensuring continuity of emergency access (by mobile if necessary) • Reversion can be invoked as a last resort Property of BT 1 DSL AM Property of OLO 2 2w Circuit MDF OLO Equipment Test Access Cross-Connect DSL BT Switch

  8. Possible Methods (5) • BT then complete the implementation - at their leisure • Recover BT Owned CPE • Connect remote line test equipment to test access cross -connect in place of BT switching equipment 1 DSL AM Property of OLO 2 2w Circuit MDF OLO Equipment Test Access Cross-Connect DSL Line Test Equipment

  9. Conclusions • The live service change-over arrangements, combined with number portability, create a complex change-over arrangement • Specific measures need to be adopted to reduce the dependence on (multiple) timed visits for change-over • These measures could either be available on day one, or introduced in a roll-out plan as the systems and processes become available (which should align with the volumes rising).

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