[cisco-voip] ISDN sudden disconnect.

[Tanner Ezell]

The issue was due to the fractional t1 (due to limited dsps, mind you this
is all lab). Thanks to you and Ted for the help.

On Mon, Aug 24, 2009 at 8:15 PM, Aman Chugh <aman.chugh at gmail.com> wrote:

> Try changing the channel order in which calls are coming currently the call
> is coming in on the 23rd channel. Try changing it to top down and reset the
> gateway.
>
>
> Aman
>
> On Fri, Aug 21, 2009 at 12:26 PM, Ted Nugent <tednugent73 at gmail.com>wrote:
>
>> They should be showing in the log, do a show logging
>>
>>
>> On Fri, Aug 21, 2009 at 1:15 PM, Tanner Ezell <tanner.ezell at gmail.com>wrote:
>>
>>> Well, this is a 1760 running 12.4(15)T9, how do you check for DSP errors?
>>>
>>>
>>>
>>> On Fri, Aug 21, 2009 at 10:12 AM, Ted Nugent <tednugent73 at gmail.com>wrote:
>>>
>>>> What version of code are you running, MGCP/DSP errors tend to run
>>>> rampant and are typically responsible for issues like this. are you showing
>>>> any dsp errors in the logs? We've had very good success with 12.4(15)T8+ as
>>>> far as MGCP/DSP stability. Cisco has tried pushing me a few time to higher
>>>> levels of code and I've almost always gone back to this version because of
>>>> bugs.
>>>> Another note that probably has no bearing on the problem but is a good
>>>> practice you should lock in your calling numbering type/plan to
>>>> isdn/national and leave called to unknown/unknown, it can cut down on other
>>>> issues down the road (provider dependent). HTH
>>>> Ted
>>>>
>>>>
>>>>
>>>>   On Fri, Aug 21, 2009 at 12:08 PM, Tanner Ezell <
>>>> tanner.ezell at gmail.com> wrote:
>>>>
>>>>>  I have a MGCP gateway connected via PRI. Whenever a call comes in
>>>>> from the PRI, the IP Phone rings a single time and then disconnects. On the
>>>>> gateway, debug isdn q931 reports:
>>>>>  *Mar  1 11:04:27.327: ISDN Se1/0:23 Q931: RX <- SETUP pd = 8  callref
>>>>> = 0x0008
>>>>> Bearer Capability i = 0x8090A2
>>>>> Standard = CCITT
>>>>> Transfer Capability = Speech
>>>>> Transfer Mode = Circuit
>>>>> Transfer Rate = 64 kbit/s
>>>>> Channel ID i = 0xE1808397
>>>>> Preferred, Interface 0, Channel 23
>>>>> Calling Party Number i = 0x00C0, N/A
>>>>> Plan:Unknown, Type:Unknown
>>>>> Called Party Number i = 0xA1, '5032733100'
>>>>> Plan:ISDN, Type:National
>>>>> *Mar  1 11:04:27.343: ISDN Se1/0:23 Q931: TX -> RELEASE_COMP pd = 8
>>>>>  callref = 0x8008
>>>>> Cause i = 0x80A9 - Temporary failure
>>>>>
>>>>> I'm wondering if this is a dsp issue, as a call into the POTS line
>>>>> works fine, but sending that call to an IP Phone I get this issue. Any
>>>>> suggestions?
>>>>>
>>>>> _______________________________________________
>>>>> cisco-voip mailing list
>>>>> cisco-voip at puck.nether.net
>>>>> https://puck.nether.net/mailman/listinfo/cisco-voip
>>>>>
>>>>>
>>>>
>>>
>>
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>
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