I have a brand new SRP521W that has a 3G wireless USB modem connected to it.
It has an asterisk system on the "inside", and port 1 of the FXS is configured as an extension
to the asterisk. Port 2 of the FXS is configured as an extension to an internet VOIP provider, for
a fax (T38, seems to work well). Internal network is connected to switch port 1.
This is where I start to get confused. If I power up the SRP without plugging in the 3G modem,
the FXS ports are NEVER enabled - the lights never come on, and they do not register, even on
the internal lan. But the ports show as enabled in the GUI.
When I plug in the 3G modem, and it connects, the FXS ports come live after about 30 seconds.
When I unplug the 3G modem, the FXS ports die again.
Is this a perverse design decision - you must have an active WAN connection before the local
FXS ports come up?
Firmware version is 1.1.1(03), despite being a brand new unit out of the box. I have just bought
support so I can get up to 09 and see if that helps.
Anyone have any ideas about the FXS issue?