Sort by DateRelevance Items per page 102550100 Telstra/Optus final determinations - mobile terminating access service (MTAS) - December 2007 20 December 2007 Optus/Telstra final determinations - mobile terminating access service (MTAS) - December 2007 20 December 2007 ID PSTN OTA Optus/Telstra 28 August 2007 ID PSTN TA Primus/Telstra 8 August 2007 ID PSTN OA Primus/Telstra 8 August 2007