SIP/2.0 480 No Routes Found error

Unanswered Question
Nov 17th, 2008
User Badges:


I've a CCME 4.x with SCCP phones. Now I need to reach the PSTN via SIP.

So I've set-up a VOIP dial-peer but it doesn't work.

I've enabled all SIP logging and I've read this error: SIP/2.0 480 No Routes Found

and then

Number of Media Streams: 1

Media Stream : 1

Negotiated Codec : No Codec

Negotiated Codec Bytes : 0

Negotiated Dtmf-relay : 0

Dtmf-relay Payload : 0

Source IP Address (Media):

Source IP Port (Media): 17454

Destn IP Address (Media):

Destn IP Port (Media): 0

Orig Destn IP Address:Port (Media):

Anyone knows if the configuration of DSP on my router is necessary to permit the communication via SIP between SCCP phones registered on CCME and external phones?

Anyone knows what is the meaning on the error SIP/2.0 480 No Routes Found?

Thanks in advance


  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
ivillegas Fri, 11/21/2008 - 08:36
User Badges:
  • Silver, 250 points or more

There may be no requirement for DSP in this case. The codec used between the CME and IP Phone reflects whatever codec is negotiated during call setup. There is a command under ephone configuration that allows users to change the codec used between IP Phones registered to the same CME.

cisirunite Mon, 11/24/2008 - 01:09
User Badges:


I've verified that I can't set codec g711alaw under ephone configuration but only codec g711ulaw and g729r8.

Now the 124-11.T IOS works on my 2821 router.

If I need to use codec g711alaw on SIP trunk, do I have to use DSP for transcoding?

Thanks in advance


Ayodeji Okanlawon Fri, 11/21/2008 - 08:39
User Badges:
  • Super Bronze, 10000 points or more
  • Cisco Designated VIP,

    2017 IP Telephony

Can you post your config here


This Discussion