In the Cisco CallManager 4.x environment with MGCP gateway, unable to make outbound calls. The debug output of Cisco IOS Gateway displays the "Cause i = 0x82B2 - Requested facility not subscribed." error message
This problem can occur if the Telco does not support the requested service. In this case, the requested service sends Caller ID, which is either not supported or not subscribed to, with the Telco, and Cisco CallManager and Gateways send the Caller ID name.
The debug isdn q931 command shows the disconnect cause code as Cause i = 0x82B2 - Requested facility not subscribed.