On Fri, May 06, 2005 at 04:24:32AM -0500, Eric Wieling aka ManxPower said: > Jon Gabrielson wrote: > >On Thursday 05 May 2005 05:28 pm, Joseph wrote: > > > >>It has 1-FXS and one 1-Life Line (it is pass through type) > > > >I've seen the pass-through term used alot and > >I'm not quite for sure what that means. What is the > > I just checked my dictionary and it defines "pass-thru" as meaning > "totally useless for most people". Pass-thru and lifeline seem to be > different terms for the same thing. i.e. The FXO port is connected to > the FXS port in the event of a power outage, but other than that it is > not useful.
Not quite. A pure "life-line" FXO that is not voip accessable is useless to *. Usually this means that an extension on the FXS port uses the PSTN on the FXO during powerfailure / 911 calls. Some ATA's have this kind of port. The SPA-3000's FXO CAN pass through in "life-line" mode automatically for power faliures and if it is configured to do so via the dial-plan. The dial plan on the 3000 allows lots of flexibility here. From a VoIP standpoint, the FXS and FXO ports can be configured to be totally separate devices, where if you want to make a call via the PSTN, the call is looped through *. "Pass through" can also be used in terms of how the FXO interfaces with *. The standard config of the SPA-3000 for example answers the call and THEN forwards to * - acting more like a full gateway than a dumb FXO. It can also be configured (kludged) to "pass through" call info to * BEFORE the call is answered (which is frequently more desirable in many situations.) Hope this helps. _______________________________________________ Asterisk-Users mailing list [email protected] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
