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500 Internal Server Error

7bridgesol
Level 1
Level 1

I am trying to get a UC520 to receive incoming calls with an ITSP.

Outbound works fine.

Per the carrier he states a 500 Internal Server Error.  I have upload his info.

Per other posts, I have read about fixing access-list 2 and the ip address that the calls are coming from.

I have addedd the two extra ip's and still no inbound calls.

Any suggestions.  I have upload the info from the carrier.

Any other thoughts.

25 Replies 25

You didn't attach the configuration, but rather the SIP debug.


marcos

i sent to you via email.  private info

Since I do not have the config - do you have the inbound DID (14122350198) mapped to an internal extension. Make sure you map the exact DID as it maybe you mapped the 10 digits but your ITSP is sending 1 + 10 digits based on the debug sent. That maybe the issue.

yes, now the carrier is telling me this.

Your Cisco device is registering multiple times from DIFFERENT ports.  This is causing failures on routing because calls are often being sent to the older registration where the port indicated is no longer open.

Please have them help you configure your PBX so that ONLY port 5060 is used on the external interface of your network.  This will prevent multiple registrations from the same IP using the same username and will allow your inbound calls to work consistently.

I did remove some usernames for secuirty purposes.

I am not sure I follow the SP reasoning but sure - you can force the UC500 to originate all SIP requests from UDP 5060:

sip-ua

  connection-reuse

Section 4.4.12 on doc below shows you how

https://supportforums.cisco.com/docs/DOC-9562

I looked at your config and seems like everything is setup ok for an inbound call. Can you gather "deb voip ccapi inout" & deb ccsip messages" from the UC500 for one failed call?

7bridgesol
Level 1
Level 1

done thank you very much.

7bridgesol
Level 1
Level 1

well inbound calls are working but ITSP still states this.

At present, there are two active registrations from each of your DIDs.

sip:14122350198@72.95.255.200:50570

sip:14122350198@72.95.255.200:5060

sip:14122350199@72.95.255.200:50570

sip:14122350199@72.95.255.200:5060

This WILL cause problems with inbound number routing.

What gives here.

Also, per that config, 14122350199 is not working.  Any thoughts on that?  Its plugged into fxs 0/0/0

Do not see your config anymore - can you PM that to me.

Not sure why the SP sees 2 registrations for the same number - see if you can remove the registrar server on the UC500 and add back:

sip-ua

  no registrar

  registrar

May also want to ensure SP clears the cache on their registrar server if its storing old values.

On why calls to 0199 do not work - would have to look at the config again and see if there is a mapping for this DID to the FXS 0/0/0 extension

here you go.

Maulik Shah
Level 5
Level 5

I see the issue - there does not seem to be the right DID to extension dial peer created. Did you configure the analog port DID via CCA or did you use CLI? If this is CCA - let me know the CCA version as this maybe something we need to fix with CCA.

FYI - as a workaround you can add the below:

dial-peer voice 11006 voip
description ** FXS from SIP Trunk **
voice-class codec 1
voice-class sip dtmf-relay force rtp-nte
session protocol sipv2
session target sip-server
incoming called-number 14122350199
dtmf-relay rtp-nte
ip qos dscp cs5 media
ip qos dscp cs4 signaling
no vad

Let me know if that fixes the issue.

dpone faxes are coming thru.  thank you.

I followed the steps in the sip config giude. but never verified the dial-peer.

will make a note of that.

two things are going on.  I can call the 4122350199 to have the fax machine to ring, but actually can't receive a fax. Also, can't send out faxes.  I can pickup the receiver and makes calls.

Also have a secondary number forwarded to an internal ext.  The SP states this.

Your system is rejecting inbound call attempts:

U 2009/09/23 18:22:48.888933 72.95.154.133:5060 -> 66.23.129.253:5060

  SIP/2.0 500 Internal Server Error..Via: SIP/2.0/UDP 66.23.129.253:5060;bran

  ch=z9hG4bKc445.42f4b291.0,SIP/2.0/UDP 208.94.159.10:5060;branch=z9hG4bK-14e

  031-4aba6778-46229ff1-43e3bc19..From: <sip:1xxxxxxxxx@208.94.159.10:5060>; - I deleted my number here

  tag=a9f5ed0-13c4-4aba6778-46229ff1-7f0ccf60..To: <17242166522>

  .253:5060>;tag=1F73ACFC-17E2..Date: Wed, 23 Sep 2009 19:22:41 GMT..Call-ID:

   CXC-115-69791d30-a9f5ed0-13c4-4aba6778-46229ff1-2f404192@208.94.159.10..Se

  rver: Cisco-SIPGateway/IOS-12.x..CSeq: 1 INVITE..Allow-Events: telephone-ev

  ent..Reason: Q.850;cause=63..Content-Length: 0....

Any thoughts.  I have uploaded my config again.  I did remove usernames

Steven Smith
Level 7
Level 7

Can you get a SIP trace from the UC500 when you do this?  Are you trying to use T38 faxing?

yes t38

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