10-06-2011 12:09 PM - edited 03-16-2019 07:21 AM
I have a client that has CME 4.2 and wants to use Exchange 2010 Unified Messaging. On my development network I setup a duplicate environment with CME 4.2 on a 3725 router. The problem I am having is Exchange is reporting it has rejected the call because there is no UM IP Gateway. Here is how it it is setup
On the 3725 FA0/0 is on the native vlan of 172.16.1.3, CME is on a subinterface of 172.17.99.1 The vlans are setup on a 4006 and the vlans can ping eachother. I have the following dial peer
dial-peer voice 8000 voip
destination-pattern 8...
session protocol sipv2
session target 172.16.26.x (address of the exchange server)
session transport tcp
On the exchange server I have a UM dialplan, a pilot number of 8000, A UM IP Gateway with the address of the subinterface 172.17.99.1. I have also tried a UM IP Gateway using the address of (FA0/0 172.16.1.3)
When I dial the pilot number, I get a busy. In the event log of the exchange server I get the message
The Unified Messaging server rejected an incoming call with the ID ...... @ (172.16.1.3) Reason: No valid UM IP gateway was found with address 172.16.1.3 (FA0/0 address)
Any Ideas?
Solved! Go to Solution.
10-07-2011 04:15 AM
You would also need to update the DHCP option 150 address. If you have ACLs on the router for toll fraud prevention that control H.323, SIP, or TFTP access be sure to update those as well.
Please rate helpful replies.
10-06-2011 12:15 PM
You need to bind the SIP process to the appropriate interface. Without these commands the SIP dialog will use whatever address is assigned to the interface the packet arrived on.
voice service voip
sip
bind control source-interface Loopback0
bind media source-interface Loopback0
Note: It's recommended that you bind everything - including CME - to a loopback, not a physical interface. For the purposes of your lab this should get the SIP dialog going though.
10-06-2011 05:47 PM
Jonathan, Thanks for the quick response. If you don't mind I have a question. In creating the loopback, it will need to be on a different subnet than fa0/0.99, which would mean I would need to change the ip source-address in the telephony config, correct? what else would I need to change? I am in no way a CME expert (why I have a development lan)
10-07-2011 04:15 AM
You would also need to update the DHCP option 150 address. If you have ACLs on the router for toll fraud prevention that control H.323, SIP, or TFTP access be sure to update those as well.
Please rate helpful replies.
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