F0n3 Phr3ak1nG

I’ve been hacking Asterisk and these Packet8 DTA310’s I’ve got in order to make the two talk to each other. So far, all I can do is get the DTA to register itself with Asterisk. I can make it ring from Asterisk, but all I get is silence.

When the DTA attempts to initiate a call, it sends a SIP INVITE, but completely ignores Asterisk’s request for authentication. I took a look at a tcpdump session for the X-Lite client and saw it properly ACK the authentication message. So it seems the DTA is acting deaf, for some reason.

I’m about to relegate these DTA’s to paperweight status. I’ve twiddled all the bits I can find on the DTA, as well as the appropriate Asterisk settings. No combination has been able to get the two talking to each other. Unless the latest Asterisk code has some miracle workaround for the DTA being dumb as rock, I’m declaring defeat on this 8×8, Inc. piece of junk.

On the bright side of VoIP, I managed to discover what was keeping X-Lite from registering on my home Asterisk server from work. The culprit was a subtle trick in my firewall rules, which were blocking the registration while at first glance seeming to accept it. Now I can use X-Lite as an extension of my home phone system from any Internet connection, anywhere in the world. And THAT is pretty damn cool!