Here is the debug q931 output for dial-out calls, which failed.
*Mar 3 23:11:19.243: ISDN Se0/0:15 Q931: TX -> SETUP pd = 8 callref = 0x0023
Bearer Capability i = 0x9090A3
Standard = CCITT
Transer Capability = 3.1kHz Audio
Transfer Mode = Circuit
Transfer Rate = 64 kbit/s
Channel ID i = 0xA9839F
Exclusive, Channel 31
Calling Party Number i = 0x91, ‘211’
Plan:ISDN, Type:International
Called Party Number i = 0x91, ‘730288’
Plan:ISDN, Type:International
*Mar 3 23:11:19.536: ISDN Se0/0:15 Q931: RX RELEASE pd = 8 callref = 0x0023
*Mar 3 23:11:20.337: ISDN Se0/0:15 Q931: RX SETUP pd = 8 callref = 0x0025
Bearer Capability i = 0x9090A3
Standard = CCITT
Transer Capability = 3.1kHz Audio
Transfer Mode = Circuit
Transfer Rate = 64 kbit/s
Channel ID i = 0xA9839F
Exclusive, Channel 31
Calling Party Number i = 0x91, ‘211’
Plan:ISDN, Type:International
Called Party Number i = 0x91, ‘0215889249’
Plan:ISDN, Type:International
*Mar 3 23:12:29.475: ISDN Se0/0:15 Q931: RX RELEASE pd = 8 callref = 0x0025
*Mar 3 23:12:30.256: ISDN Se0/0:15 Q931: RX