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no auido over PSTN E1 call

we have cucm 10.5.x and two remote branches over mpls.

one remote branch have no call issue..

another branch have no audio for some calls..but next call have audio..

pri and cucm are installed in head office..

i have attached logs of gateway for with audio and no audio calls..

can someone help me how can fix it?


  • Call failed to 66113506  from  8023
  • First time and second time call failed to 55970460 from 8023
  • Third time call successes to  55970460 from  8028
  • Fourth time call success  to  55970460 from 8023



Warm Regard's
Amit Sahrma
Cisco Employee

Failed call:

Incoming Dial-peer=9000
Outgoing Dial-peer=2010

Feb 25 08:22:28.638: ISDN Se0/0/0:15 Q931: Applying typeplan for sw-type 0x12 is 0x0 0x0, Calling num 8023
Feb 25 08:22:28.638: ISDN Se0/0/0:15 Q931: Sending SETUP  callref = 0x0499 callID = 0x841A switch = primary-net5 interface = User 
Feb 25 08:22:28.638: ISDN Se0/0/0:15 Q931: TX -> SETUP pd = 8  callref = 0x0499 
	Bearer Capability i = 0x8090A3 
		Standard = CCITT 
		Transfer Capability = Speech  
		Transfer Mode = Circuit 
		Transfer Rate = 64 kbit/s 
	Channel ID i = 0xA9838A 
		Exclusive, Channel 10 
	Display i = 'HAYA AHMAD' 
	Calling Party Number i = 0x0081, '8023' 
		Plan:Unknown, Type:Unknown 
	Called Party Number i = 0x80, '66113506' 
		Plan:Unknown, Type:Unknown
Feb 25 08:22:28.726: ISDN Se0/0/0:15 Q931: RX <- SETUP_ACK pd = 8  callref = 0x8499 
	Channel ID i = 0xA9838A 
		Exclusive, Channel 10

Feb 25 08:22:28.738: ISDN Se0/0/0:15 Q931: RX <- CALL_PROC pd = 8  callref = 0x8499 
	Progress Ind i = 0x8288 - In-band info or appropriate now available  <---ringback

Progress Indication=INBAND(8), Signal Indication=INTERCEPT(2), Cause Value=0
   Voice Call Send Alert=TRUE, Call Entry(Alert Sent=FALSE)

Feb 25 08:22:31.478: ISDN Se0/0/0:15 Q931: RX <- ALERTING pd = 8  callref = 0x8499 

   CallInfo(ccm detected=0)
Feb 25 08:22:31.482: //3166/80FFDEE6C717/CCAPI/cc_api_get_delay_xport:
   CallInfo(delay xport=FALSE)
Feb 25 08:22:33.706: ISDN Se0/0/0:15 Q931: RX <- CONNECT pd = 8  callref = 0x8499 
	Date/Time i = 0x1002190B1622 
		Date (dd-mm-yr)   = 16-02-25 
		Time (hr:mnt:sec) = 11:22:34 
	High Layer Compat i = 0x9181
Feb 25 08:22:33.710: %ISDN-6-CONNECT: Interface Serial0/0/0:9 is now connected to 66113506 N/A
Feb 25 08:22:33.710: ISDN Se0/0/0:15 Q931: TX -> CONNECT_ACK pd = 8  callref = 0x0499

####call is connected

Normal cause code terminations

Where is the other protocols? What is the whole call flow. We can see the isdn side is good but we need to see the internal negotiation.\


Hello All,

thanks for your support as now issue i resolved as i seen packet send/receive issue on IP Phone and it was for short period. when apply qos it is fixed..

Warm Regard's
Amit Sahrma