On Tue, 22 Jun 2010, Zeeshan Zakaria wrote: > If you are doing pure VoIP and no PRIs or PSTN, you don't need these > cards.
Just to clarify the acronyms... PRI is Primary Rate Integrated Services Digital Network (usually delivering 24 (T1) or 31 (E1) channels over a 4 wire connection with connectors that look like RJ45 but are really RJ48). POTS is Plain Old Telephone Service (usually delivering a single circuit over a 2 wire connection with connectors commonly known as RJ11). POTS circuits can be combined (or split up) into a T1 (or E1) using a device known as a channel bank. PSTN is the Public Switched Telephone Network. So, wouldn't it be more accurate to say "no PRIs or POTS" since both are used to connect to the PSTN? -- Thanks in advance, ------------------------------------------------------------------------- Steve Edwards sedwa...@sedwards.com Voice: +1-760-468-3867 PST Newline Fax: +1-760-731-3000 -- _____________________________________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
