Re: MGCP Controlled Gateway Call Drops

sarwarm123 · ‎11-08-2012

I am trying to configure MGCP controlled gateway but experiencing a call drop issue. A gateway has BRI card installed, when I try to make a call it rings but as soon as I receive call it just drop. I gathered some debug logs (Debug ISDNQ931). I have replaced DSP but still no luck.

When I ring first time after restart Gateway

Oct 31 16:04:23.730: ISDN BR0/1/0 Q931: RX <- RELEASE_COMP pd = 8 callref = 0x01

2951-rtr1#

Oct 31 16:04:32.423: ISDN BR0/1/0 Q931: RX <- SETUP pd = 8 callref = 0x01

Sending Complete

Bearer Capability i = 0x9090A3

Standard = CCITT

Transfer Capability = 3.1kHz Audio

Transfer Mode = Circuit

Transfer Rate = 64 kbit/s

Channel ID i = 0x89

Exclusive, B1

Calling Party Number i = 0x2183, '7776137568'

Plan:ISDN, Type:National

Called Party Number i = 0x81, '306892'

Plan:ISDN, Type:Unknown

Oct 31 16:04:32.435: ISDN BR0/1/0 Q931: TX -> CALL_PROC pd = 8 callref = 0x81

Channel ID i = 0x89

Exclusive, B1

Willenhall-2951-rtr1#

Oct 31 16:04:32.463: ISDN BR0/1/0 Q931: TX -> ALERTING pd = 8 callref = 0x81

Progress Ind i = 0x8088 - In-band info or appropriate now available

Willenhall-2951-rtr1#

Oct 31 16:04:34.487: ISDN BR0/1/0 Q931: TX -> CONNECT pd = 8 callref = 0x81

Oct 31 16:04:34.511: ISDN BR0/1/0 Q931: TX -> DISCONNECT pd = 8 callref = 0x81

Cause i = 0x80AF - Resource unavailable, unspecified

Oct 31 16:04:34.539: ISDN BR0/1/0 Q931: RX <- CONNECT_ACK pd = 8 callref = 0x01

Oct 31 16:04:34.551: ISDN BR0/1/0 Q931: TX -> STATUS pd = 8 callref = 0x81

Cause i = 0x80E2 - Message not compatible with call state or not implemented

Call State i = 0x0B

Oct 31 16:04:34.703: ISDN BR0/1/0 Q931: RX <- RELEASE pd = 8 callref = 0x01

Oct 31 16:04:34.707: ISDN BR0/1/0 Q931: TX -> RELEASE_COMP pd = 8 callref = 0x81

When I ring second time, it just beep and give this error message

Oct 31 16:05:40.233: ISDN BR0/1/0 Q931: RX <- SETUP pd = 8 callref = 0x01

Sending Complete

Bearer Capability i = 0x9090A3

Standard = CCITT

Transfer Capability = 3.1kHz Audio

Transfer Mode = Circuit

Transfer Rate = 64 kbit/s

Channel ID i = 0x89

Exclusive, B1

Calling Party Number i = 0x2183, '7776137568'

Plan:ISDN, Type:National

Called Party Number i = 0x81, '306892'

Plan:ISDN, Type:Unknown

Willenhall-2951-rtr1#

Oct 31 16:05:44.225: ISDN BR0/1/0 Q931: RX <- SETUP pd = 8 callref = 0x01

Sending Complete

Bearer Capability i = 0x9090A3

Standard = CCITT

Transfer Capability = 3.1kHz Audio

Transfer Mode = Circuit

Transfer Rate = 64 kbit/s

Channel ID i = 0x89

Exclusive, B1

Calling Party Number i = 0x2183, '7776137568'

Plan:ISDN, Type:National

Called Party Number i = 0x81, '306892'

Plan:ISDN, Type:Unknown

Willenhall-2951-rtr1#

Oct 31 16:05:48.194: ISDN BR0/1/0 Q931: RX <- DISCONNECT pd = 8 callref = 0x01

Cause i = 0x82E6 - Recovery on timer expiry

Oct 31 16:05:48.198: ISDN BR0/1/0 Q931: TX -> RELEASE_COMP pd = 8 callref = 0x81

Cause i = 0x80D1 - Invalid call reference value

V.Naveen Kumar · ‎11-08-2012

Cause i = 0x80AF - Resource unavailable, unspecified

This above line Indicates that gateway have no idea what to do with the call.

Have you setup gateway in CUCM ??

Do you configure dial peer point to the CUCM..??

Roger Kallberg · ‎11-08-2012

It's a MGCP contolled VGW, so no dial peer would be needed.

Can you post the output from sh inventory, sh isdn status and sh ccm-manager. Also post a print screen on how the gateway is setup in CUCM.

If you also post your running config it will help us to help you.

Please remember to rate helpful responses and identify helpful or correct answers.

sarwarm123 · ‎11-08-2012

Thanks for your reply, I have attached config files and screenshots. Please have a look

sarwarm123 · ‎11-08-2012

Thanks for your reply, I have attached config files and screenshots. Please have a look

Ayodeji Okanlawon · ‎11-08-2012

Muhammad,

In my experience resource unavailable usually point to a dsp failure...Your gateway is registered so your mgcp gateway config is fine..

Please send the ff:

show voice dsp voice

show voice dsp group all

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sarwarm123 · ‎11-08-2012

Aokanlawon@ I have attached sh dsp.txt. Just wanted to update you I have already replaced DSP but no luck

Ayodeji Okanlawon · ‎11-08-2012

OK..

The dsp looks fine but I dont see any voice channels allocated...

Signaling channels allocated: 12

Voice channels allocated: 0

Can you send cucm traces?

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sarwarm123 · ‎11-08-2012

Aokanlawon@ from cucm what traces you want I mean cisco tomcat cisco trace collection etc

sarwarm123 · ‎11-08-2012

Aokanlawon@ When I ring on DDI number I can see voice channel been allocated, please see below. However as soon as I answer the call it gives a busy tone and disconnect.

Weird thing is when I retry number it doesnt allocate voice channel and kept showing 0 value unless reset BRI interface, ANY IDEA?

Willenhall-2951-rtr1#sh voice call status

CallID CID ccVdb Port Slot/DSP:Ch Called # Codec MLPP Dial-peers

0x1C 121A 0x12AA3CA4 0/1/0.0 0/1:1 * g711ulaw 0/0

1 active call found

Willenhall-2951-rtr1#sh voice dsp group all

DSP groups on slot 0:

dsp 1:

State: UP, firmware: 26.3.8

Max signal/voice channel: 32/32

Max credits: 480

num_of_sig_chnls_allocated: 12

Transcoding channels allocated: 0

Group: FLEX_GROUP_VOICE, complexity: FLEX

Shared credits: 465, reserved credits: 0

Signaling channels allocated: 12

Voice channels allocated: 1

Credits used (rounded-up): 15

Voice channels:

Ch01: voice port: 0/1/0.0, codec: g711ulaw, credits allocated: 15

Slot: 0

Device idx: 0

PVDM Slot: 0

Dsp Type: SP2600

After answer the call output of the sh voice dsp group all is

Willenhall-2951-rtr1#sh voice dsp group all
DSP groups on slot 0:
dsp 1:
State: UP, firmware: 26.3.8
Max signal/voice channel: 32/32
Max credits: 480
num_of_sig_chnls_allocated: 12
Transcoding channels allocated: 0
Group: FLEX_GROUP_VOICE, complexity: FLEX
    Shared credits: 480, reserved credits: 0
    Signaling channels allocated: 12
    Voice channels allocated: 0
    Credits used (rounded-up): 0
Slot: 0
Device idx: 0
PVDM Slot: 0
Dsp Type: SP2600

dsp 7:
State: UP, firmware: 26.3.8
Max signal/voice channel: 16/16
Max credits: 240
num_of_sig_chnls_allocated: 0
Transcoding channels allocated: 0
Group: FLEX_GROUP_VOICE, complexity: FLEX
    Shared credits: 240, reserved credits: 0
    Signaling channels allocated: 0
    Voice channels allocated: 0
    Credits used (rounded-up): 0
Slot: 0
Device idx: 0
PVDM Slot: 1
Dsp Type: SP2600

DSP groups on slot 1:
This command is not applicable to slot 1

DSP groups on slot 2:
This command is not applicable to slot 2

DSP groups on slot 3:
This command is not applicable to slot 3

DSP groups on slot 4:
This command is not applicable to slot 4

0 DSP resource allocation failure

Ayodeji Okanlawon · ‎11-08-2012

What IOS are you running?

I was asking for CUCM SDI traces not tomcat traces...

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"'Nature is too thin a screen, the glory of the omnipresent God bursts through it everywhere"-Ralph Waldo Emerson

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sarwarm123 · ‎11-08-2012

Cisco IOS Software, C2951 Software (C2951-UNIVERSALK9-M), Version 15.0(1)M4, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2010 by Cisco Systems, Inc.
Compiled Thu 28-Oct-10 18:58 by prod_rel_team

ROM: System Bootstrap, Version 15.0(1r)M6, RELEASE SOFTWARE (fc1)

sarwarm123 · ‎11-08-2012

Can you please tell me what specific logs shall I download instead of full SDI, then it may reduce the size. I am downloading logs through RTMT and we have several nodes

Ayodeji Okanlawon · ‎11-08-2012

First of all, you need to know the server the IP phone you are using for test is regiustered to.

Then you need to ensure that the trace settings on the server is set to detailed

Next do a test call, then use RTMT to collect the trace on the specific server for the time range that you made the call..Make sure its the SDI trace you collect..send it over.

Please check the trace before sending it that the calle and calling number is in the trace file and also send the called and calling number

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"'Nature is too thin a screen, the glory of the omnipresent God bursts through it everywhere"-Ralph Waldo Emerson

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sarwarm123 · ‎11-08-2012

Aokanlawon: I have managed to get SDI traces, please see attached file SDI.zip. Called party number is 638094, sorry cannot provide you calling number as telco blocked CLI. Looking forward to your reply