IAX Trunking Stopped Working

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I administer a group of Asterisk servers running a mix of 10.3, 10.4, and 1.8.8.1 (mostly 10.4). One of those servers is a call concentrator/relay for E911 service. All of the other servers make an IAX connection to the relay server, which then hands off to a SIP trunk to my E911 provider. It all worked as recently as 2 weeks ago, but I discovered that sometime between then and now it stopped working without any explanation. Last modified time on the config files is over 2 months ago. The setup is as follows: On the call relay (IAX "receiver")…

Asterisk Users 3 years ago 2 Answer

IAX Trunk issue.

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I'm testing a few IAX trunk scenarios in a controlled lab. From server2 extension 5000 (Server IP Address 172.16.200.212) I dial 6001 which goes across the IAX trunk to server 1 (IP address 172.16.200.210). Instead of ringing the 6001 phone, it plays tt-weasels (the s extension). When I dial 6099 it also plays tt-weasels as it's supposed to, but it's not the tt-weasels under its extension. It also dials the s extension. I only placed the s extension in the dial plan to verify that the traffic was going across the IAX trunk and hitting the correct context. Any help…

Asterisk Users 3.1 years ago 1 Answer

IAX ATA can't register

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I have an ATCOM ATA that is trying to connect to an asterisk server using IAX. The ATA and Asterisk are on the same subnet, not firewall/nat etc. Below is a a log excerpt, showing the REGREQ received, and then Asterisk goes on to send lots of REGAUTH...and this continues for a while, but the ATA is never registered (iax2 show peers shows not registered). Any help would be appreciated. It sure LOOKS like a lot of TX for very few RX frames...so my first guess was network related but I'm not making any progress with that theory Thanks

Asterisk Users 3.1 years ago 0 Answer

Remote crash vulnerability in IAX2 channel driver.

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Asterisk Project Security Advisory - AST-2012-007 Product Asterisk
Summary Remote crash vulnerability in IAX2 channel driver.
Nature of Advisory Remote crash
Susceptibility Established calls
Severity Moderate
Exploits Known No
Reported On March 21, 2012
Reported By mgrobecker
Posted On May 29, 2012
Last Updated On May 29, 2012
Advisory Contact Richard Mudgett < rmudgett AT digium DOT com >
CVE Name CVE-2012-2947 Description A remotely exploitable crash vulnerability exists in the
IAX2 channel driver if an established call is placed on
hold without a suggested music class.…

Asterisk Users 3.1 years ago 0 Answer

IAX2 passing back and forth variables

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Hi all, I have two asterisk servers A and B. And I would like from A, dial to B passing some IAX variables. Then B handles the calls, setup some other variables that become available
to A which can continue. So far, I have used IAXVAR function. It works when sending call from A to B But variables setup on B are not available on A. Any idea how I can do it ? Here are my dialplans. +++++++++++ SERVER A +++++++++++ [contextA] exten => s,1,Set(IAXVAR(TESTVAR1)=abcd) exten => s,n,Dial(IAX2/serverb/s,30,g) exten => s,n,Noop( The out variable is : ${IAXVAR(TESTVAR2)} )…

Asterisk Users 3.2 years ago 4 Answer