petr@imtws3.im.se (Peter T|rnqvist IMT) (08/16/90)
The company I work for has just installed brand new PABXs in two of the main locations here in Sweden. We have a leased 2 Mbps link between the PABXs that gives us almost 30 simultaneous voice connections. We don't need all that capacity for voice; we would like to use about half of it for voice and the rest for data. So we told the telephone company about it and they came up with a $7-80.000 multiplexor solution that compressed voice and could give us a lot of synchronous lines. However, we just wanted to steal 15 time slots from the PABXs and use them for data. Finally, I asked Motorola/Codex and they have also multiplexors but they have no direct G.703/G.704 connection to a PABX. Instead they have a $5000 thing called Integrator that has one G.703/G.704 interface to the line and one to the PABX (or mux), and one V.35 interface to the computer equipment that you want to connect. (The Integrator is not a Motorola/Codex product; it is made by an Australian company called Sitek (I think)). After a lot of fighting with the telephone company (they first told us that this was impossible) we will try the Integrator and probably the bridge/router ACS 4100 from ACC. So... 1) Anyone with experience of the "Integrator" or something with similar functionality? 2) Anyone with experience of the ACS 4100 from ACC? Or other ACC products? Is it fast enough for a 1 Mbps line when routing TCP/IP? Does it deserve to be called a "router? 3) A Vitalink costs about twice as much. Is it worth it? 4) I just heard of a box from WellFleet that combined the functions of an Integrator, Router and Bridge and also compressed voice but unfortunately I don't think it was (yet) certified for use here in Sweden and it was a lot more expensive than an Integrator and a router/bridge. What about Cisco, do they have something like this? Peter Tornqvist Industri-Matematik Teknik AB +46 31 290250 petr@im.se
jwb@monu6.cc.monash.edu.au (Jim Breen) (08/17/90)
In article <969@imtws3.im.se>, petr@imtws3.im.se (Peter T|rnqvist IMT) writes: > > .......... Instead they have a $5000 thing called Integrator that > has one G.703/G.704 interface to the line and one to the PABX (or mux), > and one V.35 interface to the computer equipment that you want > to connect. (The Integrator is not a Motorola/Codex product; > it is made by an Australian company called Sitek (I think)). > > After a lot of fighting with the telephone company > (they first told us that this was impossible) > we will try the Integrator and probably the bridge/router > ACS 4100 from ACC. > > So... > > 1) Anyone with experience of the "Integrator" or > something with similar functionality? > Sure have. We (Monash) have four of them as we do exactly the same as you propose on our two intercampus 2Mbps links. We pull out 768k for the cisco-cisco links and leave the rest for voice, etc. They have worked faultlessly from day one. > > 4) I just heard of a box from WellFleet that combined > the functions of an Integrator, Router and Bridge and > also compressed voice but unfortunately I don't think > it was (yet) certified for use here in Sweden and it > was a lot more expensive than an Integrator and a router/bridge. We heard of this too, however: (a) it was T1 only, not G.703. (b) it had not yet got certification for PABX attachment (a lengthy and tricky process here. > What about Cisco, do they have something like this? Haven't heard of anything. BTW, the Integrator (the company is Scitec) can operate on 48V DC, and thus sit in the PABX's power float. -- _______ Jim Breen ($B%8%`(J) (jwb@monu6.cc.monash.edu.au) Dept of /o\----\\ \O Robotics & Digital Technology. Monash University /RDT\ /|\ \/| <:O____/ PO Box 197 Caulfield East VIC 3145 Australia O-----O _/_\ /\ /\ (ph) +61 3 573 2552 (fax) +61 3 573 2745