IAX Dropped Connection

Asterisk Asterisk Support
1

I’m having a problem with my IAX connection. Everything works fine but then all of a sudden the connection breaks down. If I run the commands:

#asterisk -r -x "iax2 show registry"
Host Username Perceived Refresh State
x.x.x.30:4569 slogalbo x.x.x.56:4569 60 Auth. Sent

asterisk -r -x “reload”

asterisk -r -x “iax2 show registry”

Host Username Perceived Refresh State
x.x.x.30:4569 slogalbo 60 Request Sent

The only solution is to restart Asterisk and then it Registers again. Any ideas?

2

configs and/or a debug log would help. also, your network topology and connections too…

3

which config files? iax.conf

4

for starters, yes…we don’t know anything about your server, we need to know how it’s set up, how it’s routing calls, how it’s connected to the world, ect…

5

My asterisk is behind a NAT firewall using a DSL connection. I have one IAX trunk configured using a PSTN service from junctionnetworks.com.

As I mentioned, all is well and then all of a sudden the connection stops working and a reload won’t reinitialize the connection. A full restart of asterisk is required. I have also verified my Internet connection is stable and there is no problem with my internal SIP communication.

Here is my iax.conf:

[general]
bindport = 4569 ; Port to bind to (IAX is 4569)
bindaddr = 0.0.0.0 ; Address to bind to (all addresses on machine)
disallow=all
allow=ulaw
mailboxdetail=yes

register=*******@iax.jnctn.net

[jnctn]
type=user
inkeys=jnctn
context=from-pstn
auth=rsa

[jnctn_out]
username=slogalbo
type=peer
secret=******
host=iax.jnctn.net

[jnctn]
type=user
auth=rsa
inkeys=jnctn
context=ext-did

6

my guess is your nat/firewall config. are you forwarding the appropriate port to your asterisk box?

7

I didn’t think I had to forward a port back to my box. I can make and receive calls when it is working. The connection just sporatically drops.

8

and that is because the NAT is closing the hole it opened for your outgoing traffic. i know that it works for a while, but trust me when i say that no port forwarding is probably the issue.

forward 4569 to your asterisk box and report back.

FYI: voip-info.org/wiki-NAT+and+VOIP
voip-info.org/wiki-IAX

9

Thanks. I’ll give it a shot. I’ll report back in a few days. It sometimes works for a day or so without failing.

10

sounds good.