AS5350XM - ISDN trunk connected to device, no PBX involved.
boot system flash c5350-jk9s-mz.124-19b.bin
Aug 19 18:14:18.949: ISDN Se2/0:23 Q931: RX <- SETUP pd = 8 callref = 0x1C40
Bearer Capability i = 0x8090A2
Standard = CCITT
Transfer Capability = Speech
Transfer Mode = Circuit
Transfer Rate = 64 kbit/s
Channel ID i = 0xA98381
Exclusive, Channel 1
Progress Ind i = 0x8283 - Origination address is non-ISDN
Calling Party Number i = 0x2183, '6199774592'
Called Party Number i = 0xC1, '5213100'
Aug 19 18:14:18.953: ISDN Se2/0:23 **ERROR**: call_incoming: Received a call id 0x9F with a bad bearercap from 6199774592 on b channel 1
Aug 19 18:14:18.953: ISDN Se2/0:23 Q931: TX -> RELEASE_COMP pd = 8 callref = 0x9C40
Cause i = 0x80C1 - Bearer capability not implemented