sip to isp

[jramirezlaguna]

                   I have a sip-trunk (several dial-peers ) that point to a public IP from my isp of voice , but I need to use two sip-trunk at the same isp with different public IP, how I do this?

[Leo Laohoo]

Your SIP provider has two IP addresses?

Does the SIP provider have an HSRP IP address for the two?  If not, how about a DNS entry? 

[jramirezlaguna]

Hi Leo,

Yes mi isp have two public ip address. i add some settings the first trunk-sip

cucm  7.0     in the cucm i have route patterns 9.[1-9]......

router  2821  (gateway)

config of router:

interface GigabitEthernet0/0.20

description INTERFAZ DE VOZ

encapsulation dot1Q 20

ip address 10.10.20.1 255.255.255.0

h323-gateway voip interface

h323-gateway voip h323-id GW-VOSS

h323-gateway voip bind srcaddr 10.10.20.1

!

interface GigabitEthernet0/0.30

description SIP

encapsulation dot1Q 30

ip address 10.10.30.1 255.255.255.0

ip access-group securevoipsip in

no cdp enable

dial-peer voice 3006 voip
description LLAMADAS LOCALES SLP SIP
destination-pattern [1-9]......
voice-class codec 1
voice-class sip dtmf-relay force rtp-nte
session protocol sipv2
session target ipv4:64.132.31.165
dtmf-relay rtp-nte
clid network-number 55110713

when I do the same with the trunk-sip two this does not work, sure with the new ip

regards.