[Asterisk-Users] Cisco router and "488 Not acceptable here" messages

[Martin Joseph]

On Jun 11, 2006, at 8:15 AM, James Harper wrote:

> Additionally, just to satisfy myself that I wasn't going mad I changed
> the port from 5060 to 5070 and now things are working, so something is
> definitely playing up on port 5060.
>
If you are behind a NAT perhaps two SIP devices are both trying to use 
5060?

Just a thought.
Marty