Are you sure? Everything I have seen says SDSL = Full Duplex. That being achieved by dropping the pair that provided voice and using it for signalling.
"Where ADSL utilizes unoccupied frequencies and averts conflict with analog voice frequencies, SDSL takes over the whole line. SDSL eliminates analog voice capabilities in favor of full-duplex data transmission. No splitter, no analog voice-nothing but data. As a decent alternative to T1, SDSL has gotten a fair amount of attention from Competitive Local Exchange Carriers." Excerpt from.... http://www.isp-select.com/SDSL.htm Cheers, Wiley -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Damon Estep Sent: Monday, June 13, 2005 4:55 PM To: Asterisk Users Mailing List - Non-Commercial Discussion Subject: RE: [Asterisk-Users] Should I choose DSL @ 1.5 or a full T1? You are aware that DSL (even SDSL) is half duplex and a T1 is full duplex, right? 1.5m sdsl can only do 768 sustained duplex, or 1.5 out 0 in, or 0 out 1.5 in. a T1 will do 1.5 in and 1.5 out sustained. This is due to a separate transmit and receive path on a t1 and a shared path on sdsl. The s in sdsl means symmetrical, not duplex, that is that the signaling rate is the same in either direction, but still half duplex. For VoIP a t1 is worth double what a 1.5 sdsl is because of the duplex nature of the traffic, unlike most internet that is download-centric. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Wiley Siler Sent: Monday, June 13, 2005 9:43 AM To: Asterisk Users Mailing List - Non-Commercial Discussion Subject: RE: [Asterisk-Users] Should I choose DSL @ 1.5 or a full T1? Speakeasy SDSL Is 1.5 Megs, is business class (so you get an SLA) and only costs around $100 per month. W -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Robert Goodyear Sent: Friday, June 10, 2005 7:02 PM To: Asterisk Users Mailing List - Non-Commercial Discussion Subject: Re: [Asterisk-Users] Should I choose DSL @ 1.5 or a full T1? On Jun 10, 2005, at 6:38 PM, Michael Welter wrote: > Barton Fisher wrote: >> I'm looking to expand my bandwidth for my Asterisk PBX. Why should I >> choose a T1 over DSL for my asterisk server? I found someone >> offering T1's for $290 a month + Loops or 3 Meg for $561 a month + >> Loops. Is this a good deal? >> Thanks >> Bart >> --------------------------------------------------------------------- >> - >> -- >> _______________________________________________ >> Asterisk-Users mailing list >> [email protected] >> http://lists.digium.com/mailman/listinfo/asterisk-users >> To UNSUBSCRIBE or update options visit: >> http://lists.digium.com/mailman/listinfo/asterisk-users > Where are you located? What CLEC gives you a T-1 for $290? > FWIW I provisioned a PRI and a DS-1 for $300 each. Don't know if I'm getting a break for having a voice and a data circuit broken out from one fiber drop, but that's what I'm paying here in Orange County. Also, I had a business cable modem before, which was *allegedly* not shared for business customers (suspicious) and the throughput was a roller coaster, as was the latency. The DS-1 cleared all that up. /rg Robert Goodyear Brand Up LLC http://www.brand-up.com _______________________________________________ Asterisk-Users mailing list [email protected] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users _______________________________________________ Asterisk-Users mailing list [email protected] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users _______________________________________________ Asterisk-Users mailing list [email protected] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users _______________________________________________ Asterisk-Users mailing list [email protected] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
