SIP over UDP routing in Cisco 3845

[fasil_fcv]

dear friends,           

How can we configure the SIP over UDP protocol by Cisco 3845 router?

For more details please fine the attachment.

[fasil_fcv]

PBX ( With analog interface) rj11-------------> Cisco router ---------------------------> VOIP

how can we configure router for this type diagram

[paolo bevilacqua]

Have you tried read documentation or use search?

Or even better, engage a reputable consultant, or Cisco partner.

[fasil_fcv]

Yes I tried but that is not helpful for me

How can I contact those people (engage a reputable consultant, or Cisco partner)?

Also I tried this commands in below.

voice class codec 1

codec preference 1 g711alaw
!

dial-peer voice 3250 voip

destination-pattern 3250

session protocol sipv2

session target ipv4:10.156.67.6

session transport udp

codec g711ulaw

sip-ua

retry invite 2

retry response 2

retry bye 2

retry cancel 2

no inband-alerting

sip-server ipv4:10.156.67.6

ip classless

ip route 0.0.0.0 0.0.0.0 10.157.67.1

ip route 10.157.67.0 255.255.255.0 10.167.67.225 
!
access-list 101 permit ip host 10.156.67.1 host 10.156.67.100

access-list 101 deny   udp any eq rip any

access-list 101 deny   udp any any eq rip

access-list 101 deny   udp any eq isakmp any

access-list 101 deny   udp any any eq isakmp

access-list 101 permit ip any any

snmp-server engineID local 000000090200003094202740

snmp-server community public RW

[paolo bevilacqua]

Thelist  cisco partners can be found on cisco.com

For consultants you can try contacting high reputation people on this forum, including myself.

[casanavep]

The default codec for a outbound SIP dial-peer is UDP. Unless specified it will answer on both TCP and UDP, but it will always signal via UDP as an outbound initiator unless otherwise specified. Have you verified that the "comm server" or other PBX doesn't require early-offer (SDP in initial invite) or a specific capability or attribute advertised. Have you researched the Cisco UBE Interoperability Portal (Partner Access Only). I agree with Paolo, I would get a consultation from someone, like him or me, who understands Cisco gateways and SIP as a protocol. I wouldn't follow the diagrams with labeling PVDM2-64 for a HWIC module.... I don't always offer early. But when I do, I do so with SDP. Happy normalization my friend.

[paolo bevilacqua]

casanavep wrote:
The default codec for a outbound SIP dial-peer is UDP. 

Nitpick: UDP is not a codec. It is a transport protocol.

[casanavep]

Sorry, I did misspeak. I did mean protocol. Thanks for the correction and input on the issue Paolo. But as to the question posed, UDP is the default as stated.