On Mon, Jul 7, 2014 at 3:33 PM, George Karagheaur <[email protected]> wrote: > Dear all, > I have 4 units E1 cards Digium TE820 (8 E1 ports per card) in one server, > and i put timing port as: > > span => 1,1,0,ccs,hdb3,crc4 > span => 1,2,0,ccs,hdb3,crc4 > span => 1,3,0,ccs,hdb3,crc4 > .. > span => 1,31,0,ccs,hdb3,crc4 > span => 1,32,0,ccs,hdb3,crc4
This configuration is incorrect. The first number is the span number, the second is the timing priority. Any span that is intended to recover timing from an external source should have a positive priority here. You can read more about the system.conf.sample that is installed to /etc/dahdi/system.conf when you "make samples". It is also available in the dahdi-tools repository. http://git.asterisk.org/gitweb/?p=dahdi/tools.git;a=blob_plain;f=system.conf.sample;hb=HEAD > > How should i connect timing cables? Make sure you have a real need for timing cables. They add complexity and are typically not needed. Otherwise just connect them as per the manual instructions and add "timingcable=1" to the module parameters for the wct4xxp driver. > In the user manual it is writen that with Diferential Timing cable i can > connect only 3 TE820 cards, but i have 4, what to do? How to configure it > correctly? 4 will probably work if you use the differential timing cable. I believe that limitation was due to the signal integrity of the older style timing cable. > Second question: do i understadn correctly, that if i connect cards 1-3 with > a timing cable, card 1-3 will use span 1 as timing port for all 3 cards, > right? Yes, which ever span is properly recovering the timing should be the timing master for all spans in the timing cable system. -- Russ Meyerriecks Digium, Inc. | Linux Kernel Developer 445 Jan Davis Drive NW - Huntsville, AL 35806 - USA direct: +1 256-428-6025 Check us out at: www.digium.com & www.asterisk.org -- _____________________________________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-dev mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-dev
