Audible ringback on MICS with PRI - 02/05/07 12:30 PM
I have two Norstar MICS with 5.0 software that we were converting from T-1 to PRI. When we cut over to PRI, calls would go thru but the calling party (calling into the MICS) did not have audible ringback. We have worked this problem with Qwest tier 3 support and they are quoting me the Bellcore standard SR4994 - ISDN CPE guidelines section 5.1 "Audible ring tone shall be provided by terminal CPE." There is not a setting on the MICS that controls this. The Qwest is providing the circuit from a 5ESS. This is occurring on 2 different MICS coming from 2 Different central offices (both Qwest, both cut the same day, both probably built at the same time by the same person since they were on the same order.) Qwest is insisting that this is being caused by the MICS. They have put a protocol analyzer on the circuit and captured a call both thru the switch and with the switch removed. both sessions came back the "CPE" was not sending the ringback tone signaling.
I am at a loss. I have talked to a number of other techs and no one has ever had this problem on a Norstar. Any help would be appreciated.
Thanks,
Barb
I am at a loss. I have talked to a number of other techs and no one has ever had this problem on a Norstar. Any help would be appreciated.
Thanks,
Barb