There are. You'll need to configure an application level gateway. "fixup sccp" needs to fix ip addressing at the application layer and this is not done by default. Why are your phones behind a NAT device?
The phones are behind a NAT device since the CCM is shared between multiple customers- since there are 35 handsets they have private addresses and they have an overlapping address range with another customer. Also to avoid managing VPN/private address range routing in our core network.
I don't know whether you understood my question- the solution works without any problems, but since there are 35 phones behind the NAT device I am worried as to how scalable the solution is. What I was looking for was "You can have x concurrent calls"...
I'm not running any firewalls on the IOS and don't have a PIX therefore not using fixup protocol.
SIP traces provide key information in troubleshooting SIP Trunks, SIP
endpoints and other SIP related issues. Even though these traces are in
clear text, these texts can be gibberish unless you understand fully
what they mean. This document attempts to br...
Please find the attached HTML document, download and open it on your PC.
This provides an easy to use form where you simply answer a few
questions and it will render the proper jabber-config.xml file for you
to copy/paste. There is built in logic to verif...
[toc:faq]CUCM Database Replication is an area in which Cisco customers
and partners have asked for more in-depth training in being able to
properly assess a replication problem and potentially resolve an issue
without involving TAC. This document discusse...