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Highlighted
Beginner

E1 rx received disconnect but phone cannot end

Hi,

 

We have a problem,when customer call out,the far end refused the call.If customer's phone didn't dropped,after about 40s,the phone would call out again.I checked the "Debug isdn q931" logs,the rx recieved disconnect message,but the phone cannot dropped.

 

Anyone see this issue before.

 

In  sip VG

 

controller E1 0/0/0
framing NO-CRC4
line-termination 75-ohm
pri-group timeslots 1-31
!
controller E1 0/0/1
framing NO-CRC4
line-termination 75-ohm
pri-group timeslots 1-31
!


interface Serial0/0/0:15
no ip address
encapsulation hdlc
isdn switch-type primary-net5
isdn incoming-voice voice
no cdp enable
!
interface Serial0/0/1:15
no ip address
encapsulation hdlc
isdn switch-type primary-net5
isdn incoming-voice voice
no cdp enable
!

 

voice-port 0/0/0:15
echo-cancel coverage 32
cptone CN
connection plar 4200
!
voice-port 0/0/1:15
echo-cancel coverage 32
cptone CN
connection plar 4200
!

 

dial-peer voice 911 pots
translation-profile outgoing Agentout
destination-pattern 91.T
direct-inward-dial
port 0/0/1:15
!
dial-peer voice 910 pots
translation-profile outgoing Agentout
destination-pattern 91.T
direct-inward-dial
port 0/0/0:15
!

 

The log  

 

Jan 13 02:47:17.719: ISDN Se0/0/0:15 Q931: Applying typeplan for sw-type 0x12 is 0x0 0x1, Calling num
Jan 13 02:47:17.719: ISDN Se0/0/0:15 Q931: Sending SETUP callref = 0x010D callID = 0xFDA6 switch = primary-net5 interface = User
Jan 13 02:47:17.719: ISDN Se0/0/0:15 Q931: TX -> SETUP pd = 8 callref = 0x010D
Bearer Capability i = 0x8090A3
Standard = CCITT
Transfer Capability = Speech
Transfer Mode = Circuit
Transfer Rate = 64 kbit/s
Channel ID i = 0xA9839E
Exclusive, Channel 30
Calling Party Number i = 0x0181, N/A
Plan:ISDN, Type:Unknown
Called Party Number i = 0x81, '18300000001'
Plan:ISDN, Type:Unknown
Jan 13 02:47:17.763: ISDN Se0/0/0:15 Q931: RX <- CALL_PROC pd = 8 callref = 0x810D
Channel ID i = 0xA9839E
Exclusive, Channel 30
Progress Ind i = 0x8288 - In-band info or appropriate now available

 

 

Jan 13 02:47:56.931: ISDN Se0/0/0:15 Q931: RX <- DISCONNECT pd = 8 callref = 0x810D
Cause i = 0x8A9F - Normal, unspecified
Jan 13 02:47:56.935: ISDN Se0/0/0:15 Q931: TX -> RELEASE pd = 8 callref = 0x010D
Jan 13 02:47:56.971: ISDN Se0/0/0:15 Q931: RX <- RELEASE_COMP pd = 8 callref = 0x810D
Jan 13 02:47:56.975: ISDN Se0/0/1:15 Q931: Applying typeplan for sw-type 0x12 is 0x0 0x1, Calling num
Jan 13 02:47:56.975: ISDN Se0/0/1:15 Q931: Sending SETUP callref = 0x0110 callID = 0xFDA9 switch = primary-net5 interface = User
Jan 13 02:47:56.975: ISDN Se0/0/1:15 Q931: TX -> SETUP pd = 8 callref = 0x0110
Bearer Capability i = 0x8090A3
Standard = CCITT
Transfer Capability = Speech
Transfer Mode = Circuit
Transfer Rate = 64 kbit/s
Channel ID i = 0xA9839F
Exclusive, Channel 31
Calling Party Number i = 0x0181, N/A
Plan:ISDN, Type:Unknown
Called Party Number i = 0x81, '18300000001'
Plan:ISDN, Type:Unknown
Jan 13 02:47:57.023: ISDN Se0/0/1:15 Q931: RX <- CALL_PROC pd = 8 callref = 0x8110
Channel ID i = 0xA9839F
Exclusive, Channel 31

 

Someone can help me?

6 REPLIES 6
Highlighted
VIP Advisor

Hi,

Is it CME or CUCM deployment? Where is your phone connected?

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Highlighted
Beginner

Hi,

 

It's CUCM deployment,and the phone registered in the CUCM.

 

Thanks

Highlighted

Hi, check if your gateways is sending release messages to cucm to drop the
line depending whether sip or h323.

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Highlighted

Hi,

 

It's sip.The gateway is sip trunk to cucm.

 

Thanks

Highlighted

Hi,

 

when the gateway received the disconect ,it didn't send release messsages to cucm.

 

thankyou

Highlighted

Hi,

That is the reason for your phone to continue ringing and cucm retrying.
Try to debug ccsip verbose on the gateway to see why bye is not sent to
cucm.

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