SIP Trunk with multiple remote servers

[shoaibmaqbool8260]

Hay,

       I am new to cisco IP telephony.I have just configured a SIP trunk b/w Asterisk and cisco2800 router.Now i want to create another trunk with Avaya with the first one with Asterisk also working i am confused how to do this.

below is my config on router

version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Router
!
boot-start-marker
boot-end-marker
!
enable secret 5 $1$ml.W$gFgeC4R3cZwYLfDULvXx81
enable password xxxx
!
no aaa new-model
!
resource policy
!
no network-clock-participate wic 1
ip subnet-zero
!
!
ip cef
!
!
!
voice-card 0
 no dspfarm
!
!
voice rtp send-recv
!
voice service voip
 allow-connections h323 to h323
 allow-connections h323 to sip
 allow-connections sip to h323
 allow-connections sip to sip
 redirect ip2ip
 signaling forward unconditional
 sip
  bind control source-interface GigabitEthernet0/0
  bind media source-interface GigabitEthernet0/0
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
controller E1 0/1/0
!
controller E1 0/1/1
!
!
!
interface GigabitEthernet0/0
 ip address 192.168.200.41 255.255.255.0
 duplex auto
 speed auto
!
interface GigabitEthernet0/1
 no ip address
 shutdown
 duplex auto
 speed auto
!
ip classless
!
!
no ip http server
no ip http secure-server
!
!
!
!
control-plane
!
!
!
voice-port 0/0/0
 cptone PK
 connection plar opx 7500
 caller-id enable
!
voice-port 0/0/1
!
!
no mgcp package-capability res-package
no mgcp package-capability fxr-package
no mgcp timer receive-rtcp
no mgcp explicit hookstate
!
!
!
dial-peer voice 7500 voip
 destination-pattern 7500
 session protocol sipv2
 session target ipv4:192.168.200.170          //ip of astersik server
 codec g711alaw
 no vad
!
dial-peer voice 100 pots
 destination-pattern 0T
 port 0/0/0
 forward-digits all
!
sip-ua
 retry invite 3
 retry response 3
 retry bye 3
 retry cancel 3
 timers trying 100
 sip-server ipv4:192.168.200.170           //////ip of asterisk server
!
!
!
telephony-service
 max-conferences 8 gain -6
!
!
line con 0
line aux 0
line vty 0 4
 password xxxx
 login
line vty 5 15
 password xxxxx
 login
!
scheduler allocate 20000 1000
!
end

Router#

[Chris Deren · Accepted solution]

Simply define the destination on a dial-peer as you can only have one sip-server, i.e.

dial-peer voice 7501 voip
 destination-pattern XXXX
 session protocol sipv2
 session target ipv4:x.x.x.x         //ip of Avaya
 codec g711alaw
 no vad

[shoaibmaqbool8260]

Thanks Chris,

                       Bundles of thanks for prompt support.

What if i have both servers on local network/interface .Actually i have two PABX Avaya and Asterisk on local network 192.168.200.0 .I want to connect both two cisco 2800 via sip so that both PABX can be reached via each other.

Can you help configure i dont know how to add two sip servers

[Chris Deren · Accepted solution]

That is no different from what I already provided.  The sip-server is nothing more than central place for defining the destination and then pointing to from dial-peers, having a specific destination on the dial-peer overwrites it. So, if you have multiple sip destinations you just define them on appropriate dial peers.