Technical Manual

This is sample output from the debug isdn q931 command on an IOS gateway.
Feb 4 11:10:40.396: ISDN Se3/0:15: TX −> SETUP pd = 8 callref = 0x000E
Feb 4 11:10:40.396: Bearer Capability i = 0x8090A3
Feb 4 11:10:40.396: Channel ID i = 0xA9838F
Feb 4 11:10:40.396: Display i = 'John', 0x20, 'Smith'
Feb 4 11:10:40.396: Calling Party Number i = 0x0080, '123456', Plan:Unknown, Type:Unknown
Feb 4 11:10:40.396: Called Party Number i = 0x80, '654321', Plan:Unknown, Type:Unknown
Feb 4 11:10:40.432: ISDN Se3/0:15: RX <− SETUP_ACK pd = 8 callref = 0x800E
Feb 4 11:10:40.432: Channel ID i = 0xA9838F
Feb 4 11:10:42.508: ISDN Se3/0:15: RX <− CALL_PROC pd = 8 callref = 0x800E
Feb 4 11:10:42.508: Progress Ind i = 0x8288 − In−band info or appropriate now available
Feb 4 11:10:42.508: Progress Ind i = 0x8282 − Destination address is non−ISDN
Feb 4 11:10:50.492: ISDN Se3/0:15: TX −> DISCONNECT pd = 8 callref = 0x000E
Feb 4 11:10:50.492: Cause i = 0x80E6 − Recovery on timer expiry
Feb 4 11:10:50.548: ISDN Se3/0:15: RX <− RELEASE pd = 8 callref = 0x800E
Feb 4 11:10:50.552: ISDN Se3/0:15: TX −> RELEASE_COMP pd = 8 callref = 0x000E
Solutions
In order to solve this situation, increase the value of timer T310. This can be done on the Cisco CallManager
or the IOS gateway. When the call is controlled by the Cisco CallManager (in particular, if a Skinny Call
Control Protocol (SCCP) gateway is used), this action needs to be carried out following Solution 1: Cisco
CallManager Configuration. If no Cisco CallManager is involved (in particular, if you operate in Survivable
Remote Site Telephony (SRST) mode), this action needs to be carried out following Solution 2: IOS
Configuration.
Solution 1: Cisco CallManager Configuration
Complete these steps.
From the Cisco CallManager Administration page, select Service > Service Parameters.1.