Hi,
Gordon Henderson wrote:
On Sat, 20 Jan 2007, Andrew Joakimsen wrote:
Assuming your PRI supports timing from the remote end (CO) which I
highly suspect is the case, then you should set the asterisk machine
to be a slave to the CO timing and then set any other interfaces you
have to NOT be masters, so that the CO timing is always used. Assuming
you do this and disable echo cancelation then there should be no issue
if the entire path is low latency (IE not over the internet, not over
a VPN gateway and not over a WAN unless you have end-to-end QoS and
even then you could have latency issues, of course T.38 would solve
almost 100% of any issues that these would induce in your system, but
Asterisk does not and I higly doubt it will support anything besides
T.38 pass-through which wouldn't work with any sort of PSTN interface
you could use with Asterisk)
What interesting conclusions people manage to draw :-)
It's entirely inside the same box. Call comes in on one of the PRI
lines and is routed out via one of the TDM400/Zap lines. No LAN/WAN/IP
anything...
The TDM400 card, being analogue doesn't need a remote timing source
(it generates its own?) so I guess that'll be just fine...
How do you get the latter from the former? Unsynchronised to a common
point means it *cannot* work with any reliability. "Just fine" should
have been "just about useless".
So it sounds like it should "just work". I'll let you know in a few
weeks time :)
TDM400P to E1/T1 card faxing fails by design. The lack of
synchronisation between cards means it can *never* work with any
reliability. The hardware will not permit it.
(And I know I've asked this before, but any recommendations for a
basic quality PRI card in the UK? I only need a single port and it'll
be servicing 15 incoming lines on the ISDN30 it'll be connected to)
Thanks,
Gordon
Steve
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