Path: utzoo!utgpu!utstat!jarvis.csri.toronto.edu!rutgers!texbell!vector!telecom-gateway From: samho@larry.cs.washington.edu (Sam Ho) Newsgroups: comp.dcom.telecom Subject: Re: Poor Man's Intercom Message-ID: Date: 16 Nov 89 00:51:14 GMT Sender: news@vector.Dallas.TX.US Lines: 29 Approved: telecom-request@vector.dallas.tx.us X-Submissions-To: telecom@eecs.nwu.edu X-Administrivia-To: telecom-request@vector.dallas.tx.us X-TELECOM-Digest: volume 9, issue 512, message 7 of 12 More on the subject of calling yourself: Years ago, (back when we had a #5 crossbar) if I dialed my own number, I'd get a busy signal. But, if I hung up immediately after dialing, there would be a ringback. I suppose we outran the relays opening and closing. When we got our ESS, and equal access, I tried again. Dialing self gets an immediate busy. So does 10288-NPA-self. Using 10777-NPA-self to Sprint produced silence. When I hung up, I got ringing. Currently, no call-self combination I know of produces a ringback on my phone. Routing via US West or ATT produces busy. Forcing MCI or US Sprint produces silence, or silence follwed by a busy. Sam Ho [Moderator's Note: In Chicago, dialing your own number produces one of two results, depending on the office serving you: Either you get a busy signal (as I do, regardless of having call-waiting on your line) or an intercept, 'your call cannot be completed as dialed, please check the number and dial again'. The offices which render this latter response to dialing one's own number are using an older generic. Try calling yourself via your calling card: that is, zero plus the area code, your number and your pin, terminated with an octothorpe (#). Here in Chicago, the zero plus gets me out of the local office and to some other center, thus the return trip from there to here is delayed by just a couple seconds and I do get a call waiting tone when the inbound side hits me. PT]