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- From: dab@wiretap.spies.com (Dave Bonney)
- Newsgroups: comp.dcom.telecom
- Subject: Re: "rrrringg-BOOP"
- Message-ID: <telecom12.866.3@eecs.nwu.edu>
- Date: 22 Nov 92 01:27:58 GMT
- Sender: Telecom@eecs.nwu.edu
- Organization: TELECOM Digest
- Lines: 58
- 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 866, Message 3 of 12
-
- In <telecom12.858.13@eecs.nwu.edu>, Steve Kass, SKASS@drew.drew.edu
- wrote:
-
- > When I am using my IBX work phone and someone calls, I hear a tone,
- ^^^
- > Can someone in the know fill me in on the technical details of
- > "rrrringg-BOOP" ? We own our own switch here, but I don't know what
- > kind it is.
-
- As you indicated. It's probably an 'IBX', manufactured by 'Intecom'
- near Dallas, Texas.
-
- > I had always thought that the ring signal was generated locally, and
- > if that's true, then my switch must be passing some signal for "phone
- > in use, but call waiting ringing," to which the caller's switch
- > generates the "rrrringg-BOOP." ...
-
- False. You've got your terminology backwards.
-
- In the current (normal) environment, the 'Ring-Back' signal is
- generated by the switch local to the called (ringing) telephphone, not
- the caller's switch or CO. (Unless of course it is a local call within
- the same system.)
-
- On the Intecom IBX (and TELARI) systems, the ring-back audible signal
- is controlled by matrix parameters in both the originating (trunk
- group in this case) and terminating (station) 'Class of Service' (COS)
- and 'User Group'. There are (literally) pages of parameters that can
- be altered to fit the needs of the system. (Users or administrators
- as the case may be.) Maybe you want a 'Priority Ring' (a triple
- [three short] ring)? No problem. It can even be altered to provide
- no ring at all.
-
- [Note: Kind of hard on the users though. :-) ]
-
- > We own our own switch here, but I don't know what kind it is.
-
- See above. It's probably an IBX.
-
- > [Moderator's Note: Actually, if you listen closely, when the called
- > party answers you will hear a certain kind of click on the line if you
- > interuppted them on call waiting which you won't hear if you did not.
-
- Not on the IBX.
-
- > A few PBXs using Direct Inward Dialing have the special ring signal
- > you describe when call-waiting interupts an extension user. PAT]
-
- Called, for some strange reason, 'Call Waiting Ring-Back'
-
-
- [ A Telecommunications Professional Now Unemployed In Westford MA ]
- [No Employer, No Disclaimer. Just My Own Thoughts. ]
- [ Inquiries To MCIMail 422-4552 or Internet <d.bonney@ieee.org> ]
- [ or a guest account at <dab@wiretap.spies.com> (really!) ]
- [ Telephone +1 (508) 692-4194 ]
-
-