Resource unavailable, call rejected

Unanswered Question
Mar 2nd, 2006
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Problem : as soon as I dial a number,number just vanishes from the phone.

I looked at cisco CDR messages::: DisconnectCause 15 , DisconnectText call rejected (21)

Debug isdn gives::: Resource unavailable..Why?

*Mar 2 12:30:35.838: ISDN Se0/2/1:15 **ERROR**: cdapi_process_connect_resp: cdapi sez to reject the call (appl rejected?)

*Mar 2 12:30:35.838: ISDN Se0/2/1:15 Q931: TX -> RELEASE_COMP pd = 8 callref = 0x9100

Cause i = 0x82AF - Resource unavailable, unspecified

Numbers I was dialing was '8700276161

Note, this happens when call volume is high.the cpu processor util was normal.

Set up is like this

Nortel pbx-->Cisco3845voiceh323gateway-->voip

Thanks in advance

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shyam_koneru Thu, 03/02/2006 - 08:56
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You might be running out of DSP's. Check the number of PVDM's in the Gateway.

kumarss77 Thu, 03/02/2006 - 10:19
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PVDMs we have 256onboard and 60 in Network module. process codec used wazs g729r8.

Jesse Drohen Thu, 03/02/2006 - 12:32
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  • Cisco Employee,

Cause i = 0x82AF

82 - From the public network near the local user (local telco switch).

AF - Resources unavailable, unspecified. The requested channel or service is unavailable

for an unknown reason. This can be a temporary problem.

What is your IOS version? Is the circuit running clean, any errors on the interface?

kumarss77 Fri, 03/03/2006 - 05:40
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IOS version is 12.4 2

Cisco IOS Software, 3800 Software (C3845-ADVENTERPRISEK9-M), Version 12.4(2)T3,


pri interface looksokay,with small error, 2 interfaces shows 6 error, and 3 crc error, but nothing major.

Voip side circuit was clean throughout the day.

- i feel some kind of performance degradation? only thing i could imagine was dsp farm is not configured.. will it help..?

or any suggestions pls


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