ip office and cisco ASA5505

[tsradel]

I am trying to hook up a 5610SW phone at a remote location. There is a Cisco ASA5505 at the remote location. The phone will come up, but then the screen goes blank and then discovering. I have to unplug the phone to get it back up again. Also odd characters show up where the name and extension number should be. Any ideas?

 

[Notsetinstone]

The standard answer for ALL CISCO involved installations: shut off the H323 fixups. Been saying it for years.

http://www.nu-tel.com

 

[Drew2400]

I discovered this after an upgrade to the IPO and IP Phone firmware. However, for future reference the IPO and IP Phone were both on the same side of the PIX/ASA. I was having the same problem and couldn't seem to get answers from anyone.

So, to solve the problem I did the usual pinging and scanning. I also WireSharked and reviewed the ARP tables of the IP Phones using SNMP. You ready...

Notsetinstone is correct, you have to turn off FIXUPS (I believe that the ASA refers to this differently now, not FIXUPs any more, inspect maps?). You also should turn off PROXY ARP in the PIX/ASA. You don't want the ASA giving out it's MAC on behalf of devices on the more secured side.

Hope this helps.
Drew

 

[VanZenden]

I also have the same issue...

Can you tell us how to disable H.323 in policy-map for inspect h323 h225/ras?

 

[teletechman]

look into the group policies and security policies possible default policies,for listen/monitor H323,225 and uncheck, I had a similar problem for 6 months before we found this works.

 

[VanZenden]

I found this sample configuration for Cisco ASA to interoperate with H.323 IP phones.

http://www.avaya.co.uk/emea/en-us/resource/assets/applicationnotes/ASA-h323-Stn.pdf