Internal Call failed

[Syed]

Dear All,

Need a quick help, please?

An internal/LAN call failed with destination cause code 41 in CDR, when looked at the list of cause codes it says Temporary Failure, I would like to know when does it occur and what made to it report code 41.

Calling Phone Type : 7945 sccp

Called phone Type: CIPC

Thanks in advance

Regards,

syed

[Aseem Anand]

Hi Syed,

Cause code 41 indicates a network failure. 

41	Temporary failure. The call was disconnected due to a network failure. This code appears for some long distance providers if the hunt sequence is incorrect. PRI lines must be set up for a flex hunt sequence (not a float hunt sequence).

Refer to the link below:

http://www.cisco.com/cisco/web/docs/iam/unified/ipt611/Using_Call_Flows_to_Resolve_Call_Processing_Problems.html

Aseem

[Syed]

Hi Aseem,

Thank you for your quick response.

FYI: This call is between two phones (7945g & CIPC) which are in the same site and registered to the same cucm. 

[Aseem Anand]

Hi Syed,

No matter what the topology is, cause code 41 indicates a network issue. I would suggest you to review your QOS settings for RTP. You can setup packet captures on your switch to check for any TCP re-transmissions or drops. Also, check from CMR records to see any Jitter or packet drops.

Aseem

[Syed]

Thanks again Aseem.

RTP & CMR will come into play after call is established, right?

However I shall double check Qos settings.