[SIPForum-discussion] ASR Analysis for SIP Trunk Group --- Different SIP TG

[SARKER, ROHAN (ROHAN)]

Thanks for your reply. I have now some understanding. I can't provide Eth Traces. I have only MSC traces that too is very very confidential.





Regards
Rohan Sarker

From: Vijay Tiwari [mailto:vijay11tiwari at gmail.com]
Sent: Thursday, January 21, 2010 8:46 PM
To: SARKER, ROHAN (ROHAN)
Cc: discussion at sipforum.org; rohansarker1 at gmail.com
Subject: Re: [SIPForum-discussion] ASR Analysis for SIP Trunk Group --- Different SIP TG

Hello Rohan

could you please send the  ethereal  trace for call when are u getting 487 request terminating.

this error code generally come when UAC sending the cancel request. there are many reason for that.

1. your proxy or server not able to process the call
2. UAC wait for longer to get the response of the request
3. etc

if you send the ethereal trace then we are able to better answer for your error.

Thanks
vijay

On Wed, Jan 20, 2010 at 11:26 AM, SARKER, ROHAN (ROHAN) <rohan.sarker at alcatel-lucent.com<mailto:rohan.sarker at alcatel-lucent.com>> wrote:
For another SIP TG, we found the following results:

Failure Codes

Count

Request Terminated 487

373

Temporarily Unavailable 480

271

Server Internal Error 500

31

Busy Here 486

1

Call/Transaction  481

2

Server Timeout 504

0

Not Found 404

6


Total

684




Please suggest what is the problem in the network...








Thanks and regards

Rohan Sarker

Deputy Manager

Alcatel-Lucent

DAKC, Navi Mumbai

M:+919320496780

R:+919903051236
O:+912230372803

From: SARKER, ROHAN (ROHAN)
Sent: Wednesday, January 20, 2010 9:49 AM
To: 'discussion at sipforum.org<mailto:discussion at sipforum.org>'
Cc: 'rohansarker1 at gmail.com<mailto:rohansarker1 at gmail.com>'
Subject: ASR Analysis for SIP Trunk Group
Importance: High

We were constantly monitoring ASR in our Trunk Groups and found that ASR [Answer Seizure Ratio] is extremely small in SIP Trunk Group between ZTE ZXC10 GMSC and Huawei MSOFTX3000 MSC.

We took trace on SIP Trunk Group for 20 mins and analyzed the failure codes.

We found striking results:

Failure Codes

Count

Request Terminated 487

244

Temporarily Unavailable 480

37

Server Internal Error 500

38

Busy Here 486

2

Call/Transaction  481

1

Server Timeout 504

12

Not Found 404

1


Total

335



Out of 335 failures, 244 failures are from Failure Code 487

Network Doctors here please help to find out what is the exact problem in the network, so that I can fix it and can increase ASR in our SIP TGs....

Thanks!!!








Thanks and regards

Rohan Sarker

Deputy Manager

Alcatel-Lucent

DAKC, Navi Mumbai

M:+919320496780

R:+919903051236
O:+912230372803


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