On 2/13/09, Alex Balashov <[email protected]> wrote: > > > On Fri, 13 Feb 2009 09:48:11 +0000 (GMT), Lee Wilson <[email protected]> > wrote: > > > > Alex, thanks for the quick response. > > > > So I can assume from your response this should work. That was easy :-) > > > > I just want to clarify before I got and buy anything the cards are not so > > cheap. > > > Yep, it should work. > > I am not exactly sure how one goes about setting one of the cards to > provide the T1 master clock as I have only configured low-level T1 settings > on Sangoma cards, but it should be possible. Although, honestly, I am not > sure that you're going to get a lot of timing slips on something like a 6 > ft crossover cable anyway even if the clocks are both set to line or > internal; timing synchronisation is much more of a concern on lengthier > spans and circuit designs that go through numerous network elements.
If you want to be able to set Master timing you will have to use Sangoma cards, they allow you force the timing in the wanrouter configuration. I have done extensive testing with crossover T1/E1/PRIs and I even have a testing lab set up with servers that have quad T1 cards with crossover cables going between all of the ports. There are no time slip issues, and you can run the T1 line for hundreds of feet without issues on good cable. For the cable I would suggest buying one of these: http://www.smartronixstore.com/index.cfm?fuseaction=product.display&Product_ID=9 (SuperLooper ISDN (PRI) Crossover Adapter) They are fairly cheap and will save you the headache of making your own cables. If you are using Sangoma cards you will have to configure Wanrouter properly, but the Asterisk/zaptel side is fairly easy to configure, just make sure one side is pri_net and the other is pri_cpe and you should be good to go. MATT--- _______________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
