http://www.junghanns.net/en/ISDNguard_produkt.html
srsergio -----Mensaje original----- De: John Daragon [mailto:[EMAIL PROTECTED] Enviado el: jueves, 20 de octubre de 2005 17:24 Para: Asterisk Users Mailing List - Non-Commercial Discussion Asunto: [Asterisk-Users] E1/T1 failover hardware Warning ! I know zip about electronics. I've been looking for a device to handle the switching of an E1 connection from one Asterisk box to another in the event of a catastrophic server failure. All of the solutions I've seen so far have been designed to handle the situation where the telco line faults so that the local PBX can switch to a secondary E1. I've come across this application note : http://www.maxim-ic.com/appnotes.cfm/appnote_number/2857 which describes "T1/E1/J1, N+1 Redundancy With Analog Switches" These parts are obviously designed to be built into E1 boards - hence, I think, the protection circuitry. Here's the question, then : what (apart from jumping through regulatory hoops) is to stop a simple array of MOSFETS (and a bit of control circuitry) implementing a failover switch controlled (say) by a pin on a serial or parallel port ? jd -- John Daragon [EMAIL PROTECTED] argv[0] limited Lambs Lawn Cottage, Staple Fitzpaine, Taunton, TA3 5SL, UK v +44 (0) 1460 234068 f +44 (0) 1460 234069 m +44 (0) 7836 576127 _______________________________________________ --Bandwidth and Colocation sponsored by Easynews.com -- Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users -- No virus found in this incoming message. Checked by AVG Anti-Virus. Version: 7.0.344 / Virus Database: 267.12.4/143 - Release Date: 19/10/2005 _______________________________________________ --Bandwidth and Colocation sponsored by Easynews.com -- Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
