Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!gem.mps.ohio-state.edu!brutus.cs.uiuc.edu!wuarchive!texbell!attctc!vector!telecom-gateway From: john@zygot.ati.com (John Higdon) Newsgroups: comp.dcom.telecom Subject: Re: Implementing CLASS #1 vs. #5 ESS Message-ID: Date: 13 Nov 89 03:13:20 GMT Sender: news@vector.Dallas.TX.US Organization: Green Hills and Cows Lines: 30 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 506, message 5 of 10 In article , csense!bote@uunet.uu.net (John Boteler) writes: > It occurs to me that it would be easier to implement CLASS features > in a #5 than a #1. Am I close? Why would that be? Implementation of CLASS features is no different than for any other software-driven features. There is no magic here. A #5 ESS is no more capable of providing switching logic than a 1AESS. What makes the magic happen is the controlling software (the generic). Both switches are stored-program controlled. > I note that the features to be implemented last in the #5 offices have > the need to store a list of up to 6 numbers, and I believe the LECs > are purchasing equipment from other telecom companies to provide these > services, hence the delay. But why not the same delay for #1s?? The features and the implementation were originally developed on the 1ESS family. This being done, software had to be written for the other switches (5ESS, DMS, etc.) in general CO service. If you think about it, there are more 1/1As out there than anything else. Any features that expect to be widely implemented will have to work in a 1/1AESS. Example: ISDN. Pac*Bell just filed its ISDN offerings with the CPUC. While ISDN is a natural for a digital switch, widespread offering will require the ability to provide it out of an analog office. Hence, Pac*Bell will provide ISDN out of 1AESS offices using an NEC adjunct. John Higdon | P. O. Box 7648 | +1 408 723 1395 john@zygot.ati.com | San Jose, CA 95150 | M o o !