Sriram wrote: > Hi > Thnks for the reply...So say if i want 120 channels over ss7 > signalling...will the telco give me 4 E1s and 1 separate E1 for ss7 > signalling or will the ss7 be in one of the 4 E1s itself..? Sometimes. It depends on what you negotiate with the telco you're interconnecting with. Some of them like to waste an E1 on a single signalling link though. And even stupider ones waste a single E1 on two signalling links. It seems ridiculous to mandate redundant signalling links and have them running over the same E1 (Don't ask, I had somebody come to me having to deal with that). But in any case, you can negotiate with them how you would like to set it up typically. > Do i have to just plug in those 4 E1s directly into the TE420P and > install libss7 ? thats it ? Yes :-) And configure it. > Also please tell me what are the advantages of ss7 over PRI in terms of > 1.call handling capacity 2. connectivity 3. reliability .. If you need answers to that question, you probably need to research more into what SS7 is. Typically, you have a more reliable link since you can have redundant signalling channels. The protocol also supports a lot more bearers per signalling link than you can do in PRI (or even NFAS PRI). Matthew Fredrickson Digium, Inc.
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