Yes, you can do this, but its a bit of a kludge with FXO/FXS. I've done it with FXS and E&M. If you want the FXO/FXS to work reliably, your analog station port that you connect to the FXO will need to send a disconnect signal or your ports may get hung because the router doesn't know that the call is released. I don't expect the Pana analog ports do this.
That problem really eliminates FXO's as a trustworthy connection type. That leaves you with FXS. You can put FXS at both ends without a problem. The Cisco equipment will handle FXS on both ends w/o a problem. You connect a Cisco FXS port to a trunk port on the KSU so whenever you pick up that trunk, you get a dialtone from the Cisco. You dial your digits, then the Cisco will route the call to the appropriate destination and makes the remote FXS port send ring voltage. This of course is seen as a ringing line at the far end. You can have a human or AA answer the ringing line for call handling from there. You can also program the Cisco to hotline whenever the FXS goes off hook so the user doesn't have to dial anything, but this would only work if you have 2 locations. If you had 3 locations, how would you tell the router which destination you wanted with hotline? When I set these up, I use DISA on the tie line trunks so the user can direct dial extensions rather than dealing with a human or using the AA to route calls. Its easier for the user to simply pick up the line and dial the extension that they want. If you have routing tables or ARS available, you may be able to set up a coordinated numbering plan (where one location is ext 1000 to 1099 and the 2nd location is 1100 to 1199) and set up your ARS tables to route calls to the appropriate trunk group and send the digits for the remote extension. If you go FXS, you will need to insert pauses in the dial string in the router so it waits for the far DISA or AA answer time before it sends the digits. This lets the users simply pick up the phone for intercom dialtone and dial the remote extension. If ISDN-BRI is an option, I'm getting ready to test Cisco's BRI interface with a BRI interface on a Nortel. Essentially what I'm trying to do is provide BRI service to the Nortel as a trunk, just like I'd get from the CO. If I can get it to work, then I will be installing it in about 10-12 locations. I spoke with 3 different Cisco rep's about it, and each answer was different, so I thought I'd just try it myself. If it works with the Nortel, it will work with the Pana. I'm testing S/T interfaces, but I think there may be a corresponding U interface for the Cisco also. ----- Original Message ----- From: "JOEL WEISER" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Thursday, March 28, 2002 23:23 Subject: KX-T: TIE LINE - CISCO ROUTERS 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 multipart/alternative text/plain (text body -- kept) text/html _________________________________________________________________ KX-T Mailing list --- http://kxthelp.com/ Subscription changes: http://kxthelp.com/mailman/listinfo/kxt _________________________________________________________________ KX-T Mailing list --- http://kxthelp.com/ Subscription changes: http://kxthelp.com/mailman/listinfo/kxt
