Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!rutgers!netsys!vector!telecom-gateway From: edw@wells.uucp (Ed Wells) Newsgroups: comp.dcom.telecom Subject: Caller ID Message-ID: Date: 7 Apr 89 08:34:57 GMT Sender: news@vector.Dallas.TX.US Organization: Wells Computer Systems Corp., Levittown, Pa. 19058 Lines: 9 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 128, message 3 of 6 How does the caller ID work (technically)? Is it a DTMF code before the phone rings? Some other kind of digital code? What ESS switch does this feature start on? -- ========================================================================= Edward E. Wells Jr., President Voice: (215)-943-6061 Wells Computer Systems Corp., Box 343, Levittown, Pa. 19058 {dsinc,francis,hotps,lgnp1,mdi386,pebco}!wells!edw