Brent, Best think through what you're trying to do here. You have multiple choices on how to interface * to the traditional pstn world, including the x100p, tdm cards, multiple T1 interface types, external gateways, etc.
The x100p and tdm cards have an internal 2-wire to 4-wire hybrid that is built into the chipsets on those cards. In order to use an external echo can with them, you'd have to change that to a 4-wire to 4-wire arrangement, which cannot be done. The chipsets weren't engineered for that. Since the majority of echo issues with these two cards are the result of the card's hybrid (and internal * echo can functions), simply disabling the echo can function and attempting to replace that with an external echo can box won't accomplish anything. (The problem is already existing in front of that external box.) If you install a T1 card and an external T1 mux (with fxo cards), the echo can function already exists within the mux and/or cards. Don't really need 'another' external echo can box unless you actually purchased a T1 mux that didn't have echo can in the first place (and they do exist). If you install a PRI (or related types of channelized T1 arrangements), you don't need an external echo can function as those interfaces are generally 4-wire to 4-wire interfaces already. If echo exists, its generally the result of other interfaces (located somewhere else) and those locations should be addressing the corrective actions needed to resolve the issue. If you only need a small number of fxo ports, pstn gateways in the form of Cisco boxes, Mediatrix 1204, as well as many other products can do that at a relatively inexpensive cost. The echo can function is built into those boxes, which do work. Each comes with additional considerations or issues however. Lots of choices.... > > ----- Original Message ----- > > > After reading the lists and taking reccomendations from TC, I have > finally > > > given up on the echo can built into asterisk. I am sick of hearing > > > complaints from users, so the money spent on a hardware echo can will be > > > worth its weight in gold. > > > > > > I am curious however, about some setup and component requirements. It > > > seems as if every telecom place I call, either never calls back or > doesn't > > > have a clue what I am talking about. Does anyone have any good > companies > > > with competent sales/engineer people who would help put together a > > > solution. > > > > > > Also, for anyone that has hooked up a echo can before. Do you have to > buy > > > such a large shelf? Obviously things things are intended for ILEC > > > installs, however, I can't find anything geared towards the PBX realm. > It > > > seems everything on Ebay is a 32 module shelf rack. Thats a bit over > kill > > > for us. > > > > > > Further, I would imagine this setup. Please correct me if I am off > base. > > > I would have a straight T1 cable from the Channel Bank to the Echo Can, > > > and then a X-over from * to the Echo Can. How are these solutions (e.g. > > > Tellabs) wired up? Are there RJ45 connectors on the back of the shelf, > > > or is it a strip the wire and twist method? > > > > > > Any assistance that anyone can provide to myself (and the list) would be > > > greatly appreciated, as there are many people who would benefit from > > > this... > > > > > > Thanks! > > > > > > - Brent _______________________________________________ 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
