Re: [Asterisk-Users] Using frequent keepalives to eliminate need for NAT port forwarding?

2006-05-02 Thread Tim Panton
On 2 May 2006, at 01:25, Tom Engleward wrote: I have an asterisk system behind NAT, and need to connect to public PSTN originators via SIP or IAX2, but don't have the option of forwarding any ports (4569, 5060, etc) to the asterisk system. However, the NAT system does properly establish

Re: [Asterisk-Users] Using frequent keepalives to eliminate need for NAT port forwarding?

2006-05-02 Thread Tom Engleward
--- Tim Panton [EMAIL PROTECTED] wrote: Yes. That is the way that IAX2 likes to work. Ok. However, not all providers will allow it, some require a fixed IPaddress and port for them to send calls to. Is this the reason for the recommendation I've seen in various forums to have port 4569

[Asterisk-Users] Using frequent keepalives to eliminate need for NAT port forwarding?

2006-05-01 Thread Tom Engleward
I have an asterisk system behind NAT, and need to connect to public PSTN originators via SIP or IAX2, but don't have the option of forwarding any ports (4569, 5060, etc) to the asterisk system. However, the NAT system does properly establish transient UDP forwarding on the basis of outgoing