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- Path: sparky!uunet!europa.asd.contel.com!darwin.sura.net!zaphod.mps.ohio-state.edu!news.acns.nwu.edu!telecom-request
- Date: Tue, 8 Sep 92 12:13:16 GMT
- From: vixen!jadams@uunet.UU.NET (26070-adams)
- Newsgroups: comp.dcom.telecom
- Subject: Re: Strange MCI Problem
- Message-ID: <telecom12.696.7@eecs.nwu.edu>
- Organization: Bellcore, Livingston, NJ
- Sender: Telecom@eecs.nwu.edu
- Approved: Telecom@eecs.nwu.edu
- X-Submissions-To: telecom@eecs.nwu.edu
- X-Administrivia-To: telecom-request@eecs.nwu.edu
- X-Telecom-Digest: Volume 12, Issue 696, Message 7 of 12
- Lines: 38
-
- In article <telecom12.688.9@eecs.nwu.edu>, wah@zach.fit.edu ( Bill
- Huttig) writes:
-
- > I had a strange thing happen to me tonight. I called my aunt and
- > after dialing heard nothing; no ringing or noise at all, so I tried
- > several more times. At first I thought it might be that the speed
- > dial lost the end of the number so I dialed it (well actually pushed)
- > the number manually ... still no luck
-
- > Is this what can happen with a SS7 problem? The ringing through but no
- > voice path getting opened?
-
- Not according to what I've read. Call set up protocol with SS7 (By
- the way, I strongly doubt you were SS7 connected) currently utilizes
- "distant end" ring back which is a strong indication that all went
- well with YOUR LEC and MCI, but the ball was dropped by the distant
- LEC, when your aunt answered. The good news is that since "cut
- through" did not occur, a billing record was never completed either ...
- whew!
-
- > Is MCI connecting their SS7's to the LEC's yet?
-
- Not officially yet, full SS7 connectivity between LEC's and IXC's is
- on a lottery basis for priority of who gets connected first. However,
- there is much testing of interworking of networks at all levels which
- is going on and must be completed before such interconnections are
- turned up to live traffic. (Hint ... if the post dialing delay is in
- the order of four to six seconds, your are not yet SS7 connected
- between your LEC and IXC ... that's about the length of time it takes
- to transmit FG-D data over Multi Frequency trunks up to the IXC and
- back to the far end LEC).
-
-
- Jack (John) Adams | Bellcore RRC 4B-259
- (908) 699-3447 {Voice} | (908) 336-2871 {Facsimile}
- jadams@vixen.bellcore.com | kahuna@attmail.com
-
-