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Cisco Employee

CME SIP Phones

I am trying to have a 7970 register across a different subnet on a CME.   It will register if I set the source-address to the external port of the CME but then that causes the other phones connected to the i.nternal ports to not register or not register correctly.  i.e. "Nonce tree obsolete".   How do you get the phones to register correctly?

I have attached my config

Scott

1 ACCEPTED SOLUTION

Accepted Solutions
Hall of Fame Super Gold

Re: CME SIP Phones

Configure VPN between routers. Simpler is GRE.

8 REPLIES
Hall of Fame Super Gold

Re: CME SIP Phones

Why SIP to begin with ?

Less features, more bugs.

Cisco Employee

Re: CME SIP Phones

I really dont know anymore.  haha.  My boss wants to be abel

to have a remote phone be able to contact the cme.  You

have any advice?

Hall of Fame Super Gold

Re: CME SIP Phones

Convert it to sccp and you will not have any issue.

Cisco Employee

Re: CME SIP Phones

Also do you have suggestions for getting through NAT at a remote

site?  I dont think STUN is supportd on Cisco phones.

Hall of Fame Super Gold

Re: CME SIP Phones

Configure VPN between routers. Simpler is GRE.

Cisco Employee

Re: CME SIP Phones

Thanks that worked!

Hall of Fame Super Gold

Re: CME SIP Phones

Good to know, thanks for the nice rating and good luck.

New Member

Re: CME SIP Phones

FYI

Sample config:



voice service voip --> sip --> registrar server expires max 3600 min

1800





!--- Enable Cisco IOS SIP registrar.



voice register global

mode cme

source-address 10.10.10.10  port 5060

max-dn 100

max-pool 192

load 7960-7940 P0S3-07-4-11

authenticate realm cisco.com



authenticate register
!--- Set authentication for phone registration.

voicemail 9498889000

create profile sync 000110864224206A



voice register dn  1

number 9497778888

name SIP-phone-1

!

voice register dn  2

number 9498889999

name SIP-phone-2

!

voice register pool  1

id mac 0014.6AC3.C9D6

number 1 dn 1

dtmf-relay rtp-nte

username SIPphone1 password SIPphone1



***// Ensure credentials/authentication
are in SIP-UA for invite challenges (401 Unauthorized
challenge-response-Exactly what we were having issues with -) ***



codec g711ulaw

no vad

!

voice register pool  2

id mac 00D0.1E00.61E9

type P100

number 1 dn 2

dtmf-relay rtp-nte

username SIPphone2 password SIPphone2

codec g711ulaw

no vad
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