05-14-2013 05:59 AM - edited 03-16-2019 05:18 PM
Hi,
We have a problem with one of our MGCP gateways. The connectivity is as follows:
PBXPhones --- SiemensPBX ---E1@MGCP_Local---CUCM---MGCP_External-E1--PSTN
The problem is when PBXPhones make a call to mobile phones (GSM Network), they hit the E1 port of LGCP Local. My expectation is that MGCP Local E1 should make a call to the dialed number towards CUCM. And the CUCM should send the call to the PSTN via MGCP External. However, I get an isdn disconnect on MGCP_Local with the following cause code:
Dialed Number Analyzer shows that the call is successful from MGCP_Local E1 to the dialed number (cell phone) via MGCP_External
Cause i=8083 No route to destination.
Any ideas what might be wrong or missing?
Cheers
Anar
05-14-2013 07:25 AM
That usually means routing issues or CSS/partitions issues, I'd start by checking all that.
HTH
java
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05-14-2013 08:11 AM
Jamie,
The CSS on E1 port contains the partition in which I have the required RP. What else do I need to check? Moreover, as I have mentioned earlier, the CUCM DNA says a call from E1@MGCP_Local to the PSTN is successful.
Am I missing anything else?
05-14-2013 08:25 AM
Can you send a debug isdn q931 from the local mgcp gateway. Include the calling and called number
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05-14-2013 08:32 AM
Are yousending the right set of digits?
Do you need any transformation??
Is the significant number of digits properly configured?
HTH
java
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05-14-2013 09:12 PM
Here is a snippet from debug isdn q931 output:
*May 14 13:08:30.051: ISDN Se0/1/0:15 Q931: RX <- SETUP pd = 8 callref = 0x0005
Bearer Capability i = 0x9090A3
Standard = CCITT
Transfer Capability = 3.1kHz Audio
Transfer Mode = Circuit
Transfer Rate = 64 kbit/s
Channel ID i = 0xA98398
Exclusive, Channel 24
Facility i = 0x91AA068001008201008B0100A1190202E5C006042B0C0900A10D04084452494C4C494E47020101
Progress Ind i = 0x8183 - Origination address is non-ISDN
Calling Party Number i = 0x0083, '75812'
Plan:Unknown, Type:Unknown
Called Party Number i = 0x80, '0051660XXXX'
Plan:Unknown, Type:Unknown
Locking Shift to Codeset 5
Codeset 5 IE 0x31 i = 0x82
*May 14 13:08:30.055: ISDN Se0/1/0:15 Q931: TX -> RELEASE_COMP pd = 8 callref = 0x8005
Cause i = 0x8083 - No route to destination
And note that I do have 0050XXXXXXX pattern in CUCM. Its partition is included in the CSS assigned S0/1/0 interface.
05-14-2013 10:01 PM
Hi Anar,
Now this just might be a typo, but the called number which we get from the Siemend PBX is 0051660XXXX and the route pattern which you say that you have configured is 0050XXXXXXX.
I have highlighted the difference. In case this was a typo:
> Have we tried running a debug on the external MGCP gateway, does the call reach there? If so, please attach the ouput.
Regards,
Jagpreet
05-14-2013 10:27 PM
Hi Jagret,
Sorry, my mistake. The pattern is 0051XXXXXXX. So we should eliminate this.
As far as the external MGCP is concerned, it does not get anything re the call from 75812(PBX) to 0051660XXXX(GSM).
Cheers
Anar
05-15-2013 12:35 AM
Can you send usvcucm SDI traces. Make sure the tsce level is set to detailed.
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