Hi folks, I'm still having the following problem, maybe someone can help me out of it. Two IDENTICAL MACHINES (same motherboard, same RH 7.2, same *) communicate through IAX2. Everything works ok on machine 1. On machine 2, if I try to use 4 fxo's from a TDM400 card, sound gets lousy. If I manually destroy one of the zap channels (e.g. zap destroy channel 4), sound gets good again. Help! PauloHM
On Wed, 2003-10-01 at 06:32, Paulo Mannheimer wrote:> Hi folks, > > I'm still having the following problem, maybe someone can help me out of > it. > > Two IDENTICAL MACHINES (same motherboard, same RH 7.2, same *) > communicate through IAX2. Everything works ok on machine 1. On machine > 2, if I try to use 4 fxo's from a TDM400 card, sound gets lousy. If I > manually destroy one of the zap channels (e.g. zap destroy channel 4), > sound gets good again. >Did you check interrupts? Try "cat /proc/interrupts" and see if anything is sharing an interrupt. Jared Smith
I am trying to optimize echo cancellation. Originally (with only one phone attached), echo cancellation worked well. Echo was only obvious in the first second or so of a call. Now, with multiple phones on the system, the echo does not go away. It is quiet, but audible and somewhat annoying. I have the following configuration: PSTN (4 lines) <-> ADTRAN TSU600 <-> T1 <-> T100P <-> asterisk <-> Budgetone 100 (20 phones) The budgetone phones and the * server are all on the same local branch of a full duplex switched LAN (100BaseT/10BaseT, Baystack 450 switches). Typical delay times (from SIP SHOW PEERS) are 3-8 msec. Am I better off to just set echocancel=yes, or should I experiment with setting the number of taps? Does echo cancel=yes mean "hunt" for the optimal number of taps, based on transmission delay? Also, can I help matters with the type of service setting (tos) in sip.conf? What exactly is "tos"? Stephen R. Besch