ASTERISK/vicidial==>SIP setup Behind NAT

[ruben23]

hi...i need some workaround suggestion and comment about my network setup..coz im hearing information that SIP are not good for NAT setup..

My Network setup is like this:

Internet/VOIP==>NAT(win server 2003)==>Asterisk Gateway/Database==> Client PC (using SIP softphones/Eyebeam)

Currently all call are working but mostlty i ahd random disconnection, chappy voice, no ringback from client and even client cannot hear the agents call.

[mflorell]

If you have the option, try using IAX instead of SIP, otherwise you may want to get a SIP-aware firewall/router.

[ruben23]

does NAT also affect outbound call with SIP

[mflorell]

It can sometimes, with the inbound audio not returning inside of some networks.