Chris Hall wrote: > > Dear Treggers, > > I want to design a system to process voice and data from the Telecom > network in the UK and at the same time, call and pass data to devices such as > telephones and fax machines. Processors, I am OK with but I don't want to > reinvent the wheel when it comes to Telecoms. > > Can someone please tell me : > > a) Is there a good book on the subject of telephone systems especially giving > the specification of signals used (ie ringing voltages, format of callers > number > transmission, fax tone frequencies etc) ? This needs to be relatively low cost > since this is a personal project. > > b) Are there some standard interface components which could be used ? > > I would be grateful for any information you may have. > > Regards > > Chris > [email protected]
For your specific needs I can't say, but two books that are invaluable around here are DIGITAL TELEPHONY, second edition, Author - John Bellamy Copyright 1991 ISBN 0-471-62056-4 John Wiley & Sons, New York and NEWTON'S TELECOM DICTIONARY, fifth edition Author - Harry Newton Copyright 1996 ISBN 0-936648-X Telecom Library Inc. 12 West 21 Street New York, NY 10010 tel - 212-691-8215 ******************************************************* ------------------------------------------------------- The comments and opinions stated herein are mine alone, and do not reflect those of my employer. ------------------------------------------------------- *******************************************************
