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Software Testing ACCC refuse to regulate access from Telstra's 'legacy' ISDN & DDAS services
Software Testing ACCC refuse to regulate access from Telstra's 'legacy' ISDN & DDAS services | ACCC refuse to regulate access from Telstra's 'legacy' ISDN & DDAS services |
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| by Stuart Corner | |
| Thursday, 18 June 2009 | |
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Page 2 of 3 Opus further argued that distance limitations on DSL in some areas preclude its use as a substitute "even if the number of services in operation (SIOs) was in decline for DDAS and ISDN, a significant number of SIOs still depend on these declarations in particular regional areas where ULLS-based access is non-existent or inadequate due to distance limitations. Regulated access to both services is still required in the medium term to maintain competition in such areas."Primus focussed on ISDN as a key enabler of videoconferencing saying "this happens to be key remaining application on ISDN, and can be expected to remain active for many years. Videoconferencing is based on making several simultaneous ISDN 64kbps calls from Basic Rate Access ISDN (BRI) or Primary Rate Access ISDN (PRI). End users of reliable business-quality video conferencing are reluctant to migrate to using the Internet, as whilst ADSL is at a comparable price to ISDN, the lack of a quality of service (QoS) on Telstra ADSL is a problem. "To resolve the QoS problem the end user must purchase BDSL which is far more expensive and is therefore not viable as a substitute. A video conference requires around 384kbps both-ways to provide comparable quality to ISDN. Customers on lines that are beyond approximately 4km will not achieve 384kbps in one or other direction via ADSL, but will usually still be able to purchase ISDN BRI and PRI. "The lack of QoS on Telstra ADSL creates several points where a video conference will fail due to competing traffic demands. Video conference units need a continuous reliable throughput, and if the performance continues to fluctuate the picture quality rapidly becomes unusable." Primus view was supported this week by Graham Williams, CEO of iVision, one of Australia's leading videoconferencing systems integrators and Tandberg's largest reseller in Asia Pacific. He told iTWire at the launch of the rebranded iVision this week DSL services, were not an adequate substitute for ISDN in regional areas for videoconferencing.
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