Hi all
I'm having a problem getting usable quality from my Asterisk setup.
*SETUP*
2 Ghz PC with 1 GB Ram with TDM 400p 1 x FXS to route to analog phones
in the house and 2 x FXO to receive calls and in the future faxes.
Gentoo Linux
Here is what I've done so far
(1) Moved theTDM 400p (FXS, , FXO, FXO) to it's own interrupt (It was
sharing in the past)
cat /proc/interrupts
CPU0
0: 10236724 XT-PIC timer
1: 486 XT-PIC i8042
2: 0 XT-PIC cascade
5: 40694267 XT-PIC wctdm <==============
10: 196233 XT-PIC eth0
12: 225 XT-PIC i8042
14: 247177 XT-PIC ide0
15: 26 XT-PIC ide1
NMI: 0
LOC: 0
ERR: 0
MIS: 0
(2) I'm running the latest kernel
uname -r
2.6.17-
(3) I am running the latest Asterisk
Asterisk-1.2.12.1 Libpri-1.2.3 zaptel-1.2.8
I compiled Zaptel with make clean ; make linux26 ; make install
(4) ztmonitor has become my friend
the Ring sends the VU meter off the chart, but the voice is below half way.
I have tried changing the rxgain, txgain but that doesn't improve
much. It raises the Volume and I can heard better.
But the "feedback" (What I hear of myself in my analog headset) is off
tone , too loud and poor
(5) ztspeed reports
Count: 254114 (Not sure if that is good or bad) ???
(6) zttest reports
--- Results after 474 passes ---
Best: 100.000000 -- Worst: 92.578125 -- Average: 99.713476
(7) I have even run ./fxotune
which generated /etc/fxotune.conf
3=3,0,0,0,0,0,0,0,0
4=4,0,0,0,0,0,0,0,0
Found
http://www.voip-info.org/wiki/view/Asterisk+fxotune
But the -d -b 3 doesn't work only -i and -s are allowed.
PROBLEM
The Call tone has a tin can sound (too much highs and not enough lows,
for those with musical backgrounds)
The Volume has improved. It did sound like I was talking behind my hand
in front of my mouth, but not anymore.
The is a static HISSS that randomly comes and goes and gets so loud that
it drowns out whatever the calling party is trying to say.
It can be heard on both ends but very Loud on the FXS connected phone
Any Ideas What I can try next
Thanks All
Barry
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