More SIP Stuff

Today we had an issue with getting a remote extension to connect correctly to our Asterisk (PBXtra) box. It would connect remotely, but certain functions wouldn't work (like call transfer). It turned out that the Embarq/Sprint DLS modem was blocking or redirecting certain SIP ports (10000-20000 UDP). We reconfigured the modem as a bridge (was previously NAT'ing the internal network) and connected a Linksys WRT54GL with DD-WRT installed. Then, after connecting the phone, the remote extension began working. Now, this business's secretary can work from home and transfer calls, etc. just as if she was in the office!


Josh Phillips
ProVisionIT™
www.provisionit.com

Broadvoice Registration Error on Asterisk Server

So I've messed around with asterisk@home, Trixbox, as well as the commercial side of all these products, Fonality's PBXtra. Here are a couple of things I've learned the hard way:

1. Broadvoice blocks your external IP address for an unknown amount of time (1 hour according to one tech that I talked to), when you have too many failed registration attempts. Ok...what's the deal here? I heard from someone else that they did this, so when I couldn't get my Broadvoice trunk to register, I changed the external IP address on my router to another IP in my pool, and it registered.

2. If you want to change which Broadvoice proxy an Asterisk server connects to, don't change the proxy name in the config file (just leave it at sip.broadvoice.com) and make an entry in /etc/hosts for whichever proxy you want to connect to.

Well, there is more, but that's all I have the energy for right now. I'll post more later.

Josh Phillips
ProVisionIT™
www.provisionit.com