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
This is where I post things I come across in my work as an IT consultant, plus other random goodness. Enjoy.
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