I have problem with sending causes (User busy, Unallocated/unassigned number) to PSTN via ISDN BRI interface.
In IOS 12.4 gateway 2811 sends:
Feb 20 17:41:25.259 MET: ISDN Se0/0/0:15 Q931: TX -> DISCONNECT pd = 8 callref = 0x98E8
Cause i = 0x8081 - Unallocated/unassigned number
In IOS 15 gateway 2911 sends:
Feb 20 16:47:29.230: ISDN BR0/2/1 Q931: TX -> PROGRESS pd = 8 callref = 0x8B
Cause i = 0x8181 - Unallocated/unassigned number
Progress Ind i = 0x8188 - In-band info or appropriate now available
I have problem with this behavior, because my telephony provider doesn't accept causes in PI, so calling party hear only silence. Is it possible change behavior of 2911 gateway for sending DISCONNECT and Cause instead PROGRESS and Cause.