At 12:23 AM 3/29/2002 -0500, JOEL WEISER wrote: >Hey guys, > >My situation/question deals with a VoIP application using Cisco Routers. > >Let me start by saying that I have no/none/nadda experience or knowledge when it comes to routers. If I can make this "Tie-Line" application work then I should also be able to sell my customer two new phone systems and two tvs systems. (The customer currently has two 616 systems) > >Does anyone here have any experience setting up a "Tie-Line" type of circuit (The basic "Station-Trunk, Trunk to Station" connection) using Cisco Routers connected by a T-1. > >The customer currently has his two locations networked together for data, using Cisco Routers Model 1751, connected via a T-1. He asked me if it was possible to also connect the two phone systems together using his existing T-1 and routers. > >After some brief looking into, I find that Cisco makes optional cards that I think will work for this application. They are the "CISCO VIC-2FXO and VIC-2FXS" cards. > > I will be responsible for the telephone system part in all of this, and the customers "computer guy" will take care of configuring and programming the routers. > >I spoke to Cisco Tech Support. They said that these cards should do the trick. But the tech support reps that I spoke to both sounded puzzled when I started asking questions about things that concerned me- like what "Ring Voltage or Talk Battery does the VIC-FXO card accept. ( I believe that the KXT systems use -24volt talk battery and about >60v-65v slt ring generator) > >Both myself and his"computer guy" seem to have second thoughts about telling the customer that we can make this happen and that he should purchase the cards. To set up two tie-lines in each direction, he will need two of each card which should cost about 1200$. The customer says he has his own supplier for the hardware but once he buys the cards he can't return them. > >So my question is - is the above application do-able?? > >thanks- Joel
The customer probably needs to find a different supplier if he can't restock the boards. That said, it's do-able, but there are better ways than with 2 fxo and 2 fxs's on each site. Unfortunately, Panasonic D1232's don't have E&M Tie lines. I have not certified in the TD-500 to know if the software changed considerably from the T-336, but I totally hated the 336 because it wasn't like the 123211-D or the TD-1232. I had a customer who wanted to upgrade from 14 multi-line and 16 single line sets to 15x72 with 6 trunks. You know how to make lines ring on a 70xx set, you press program 99 or program, and dial the code to make the lines ring and you press the CO-Button and dial 0 + the trunk number to make the trunks appear on the phone. Forget that on the 336 :-) Anyway, for your 2 FXO/FXS circuits, you'll use 2 station and 2 CO ports on each box. Worst case scenario is that you'll need to add 2 Proctor 46224's (or 4 46222's) to bring the voltage up to -48 for the Cisco FXO's. Make sure that the FXO/FXS can run with either with gain or lossless, because you hve some trunk-to-station pad issues in this setup(ie trunk to station pad 3db then back to another station on the distant end inserting a second 3db pad makes for a very long line). Your VM should take care of answering the trunks on the foreign switch(es) so you won't need DIL, but don't skimp on the VM. I think your TVS-50 would have to work it's heart out...unless you want to dedicate a TVS-50 on each end to service the "tie lines". The best part is that you can set up some speed dial numbers to dial 87 or 88 pause 3 digit foreign switch extension or, God forbid, 88 pause 9 and give you distant city dialtone. Anyway, after you work up a quote for doing it this way, and I hope you are reusing at least 12 multi=line sets at each location, try substituting a system that has E&M trunks and replacing the phones and see if it might be wiser to just replace system, phones and all. Carl "this took 10 times 30 seconds to answer" Navarro _________________________________________________________________ KX-T Mailing list --- http://kxthelp.com/ Subscription changes: http://kxthelp.com/mailman/listinfo/kxt
