IP phones to analog phones and vice versa.

[jdw28]

Hi,

I have a simple VoIP test environment of two 3745 routers, with two IP phones and two analog phones. We are using CCM 3.3 and H.323 for the routers. I can make phone calls between the IP phones, between the analog phones, and calls from IP to analog phones. I can not make calls from analog to IP phones.

Following is the router #1's config:

!

voice-port 1/0/0

voice-port 1/0/1

voice-port 1/0/2

voice-port 1/0/3

dial-peer voice 1 pots

!analog phone #1

destination-pattern 1001

port 1/0/0

!

dial-peer voice 2 pots

destination-pattern 1002

port 1/0/1

!

dial-peer voice 3 pots

destination-pattern 1003

port 1/0/2

!

dial-peer voice 4 pots

destination-pattern 1004

port 1/0/3

!

dial-peer voice 5 voip

!To analog phone #2, number 2002 on router#2

destination-pattern 2...

session target ipv4:10.10.11.2

!

dial-peer voice 6 voip

!IP phone #1, through CCM 10.10.10.11

destination-pattern 7961

session target ipv4:10.10.10.11

!

dial-peer voice 7 voip

!IP phone #2, through CCM 10.10.10.11

destination-pattern 7941

session target ipv4:10.10.10.11

CCM is configured with four route patterns:

100x use router #1

200x use router #2

794x use router #1

796x use router #1

Any idea? Thanks.

-Jim

[Maulik Shah]

the most common reason is the IP address defined for the gateway in Call Mgr is not the same as the IP address of the outgoing interface on the gateway to reach call Mgr. Or there is a Calling Search Space / partition issue - can you look through this link:

http://www.cisco.com/en/US/tech/tk652/tk701/technologies_tech_note09186a0080094604.shtml

Else we may need to get deb voip ccapi inout to check the disconnect code etc.

[ashok_boin]

Hi Jim,

There is clearly a loop happening according to the configuration.

Let's take a simple example of analog phone 1001 dialing IP phone 7941.

According to the VoIP dial peer for 7941 on Router 1, the request is forwarded to CCM 10.10.10.11 from Router 1. After reaching to CCM, the route pattern 794x is again pointing back to Router 1 which should actually point to Router 2.

Thank you,

-Ashok.