[Asterisk-Users] Polycom phones

[Senad Jordanovic]

I have a couple of Polycom phones, bootrom 2.5.0, SIP 1.3.1.0056. Works
great with Asterisk when I power on the phone. However, after some time,
say an hour, I cannot receive calls on this phone. On Asterisk, when I
do "database show", it does show the phone in there, but it cannot reach
the phone. Is there a way to keep alive the connection with Polycom?

Any suggestions? 

>>>>>>>>>
Is your phone behind a NAT?