search for: crystalclock

..."> <port mode="te" link="ptmp">1</port> </card> <card type="hfcpci"> <port mode="te" link="ptmp">1</port> </card> <card type="hfcpci" dtmf="yes" crystalclock="yes"> <port mode="nt" link="ptp">1</port> </card> <card type="hfcpci" dtmf="yes" crystalclock="yes"> <port mode="nt" link="ptp">1</port> </card>...

I have setup a few Asterisk systems for customers using Digium TDM400 cards and Aastra phones. No problems with sound quality at all except at this one site. Every time I try their system I don't hear any problems but they tell me that it is really bad. They describe it a a loud scratching sound. Are there any tests that can be done to pinpoint the problem? Has anyone seen this before? Are

...n all B-channels > # pcm_slave - set PCM bus into slave mode > # ignore_pcm_frameclock - this E1 is NT without PCM frame > # clock > # rxclock - use clocking for pcm from ST Port > # crystalclock - use clocking for pcm from PLL (genrated > on board) > # watchdog - This dual E1 Board has a Watchdog for > # transparent mode > # > # > card=1,0x4, dtmf > > # > # Port settings > # > # Syntax: <port_type>=<port_...