Hi all I have a small problem here. We are running Asterisk 1.4.18 and libpri 1.4.3 (how can I check the zaptel version again?) on an Intel core 2 duo 1.6Ghz, 2GB ram under Ubuntu server. We have 4 analog line coming into the box via a TDM 800 wildcard with echo cancel module and quad fxo modules. The server has been running smoothly with almost no problems for awhile now. Recently I started picking up problem with the voice clarity on our end, it sounds like a mobile going through a low signal patch. I asked the person on the other end and they can hear me loud and clear. I bumped the txgain up a notch a while back, can it be because of this? I ran a top and saw that the server only have about 16Mb free ram, can this be a possible cause? My zapata.conf and zaptel.conf are below. Thanks in advance Ian> # less /etc/zaptel.conf > # Autogenerated by /usr/sbin/zapconf on Fri Feb 29 16:12:07 2008 -- do > not hand edit > # Zaptel Configuration File > # > # This file is parsed by the Zaptel Configurator, ztcfg > # > # Span 1: WCTDM/0 "Wildcard TDM800P Board 1" (MASTER) > fxsks=1 > fxsks=2 > fxsks=3 > fxsks=4 > # channel 5, WCTDM/0/4, no module. > # channel 6, WCTDM/0/5, no module. > # channel 7, WCTDM/0/6, no module. > # channel 8, WCTDM/0/7, no module. > > # Global data > > loadzone = za > defaultzone = za > # less /etc/asterisk/zapata.conf > [trunkgroups] > ; define any trunk groups > > [channels] > ;hardware channels > > ;default > ;groep nommers en rede > ; 1 => Landlyn > ; 2 => Selfoon > > ; Span 1: WCTDM/0 "Wildcard TDM800P Board 1" (MASTER) > ;;; line="1 WCTDM/0/0" > signalling=fxs_ks > callerid=asreceived > context=incoming_calls > group=2 > busydetect=yes > usecallerid=yes > hidecallerid=no > callwaiting=no > threewaycalling=yes > transfer=yes > echocancel=yes > pulsedial=no > callprogress=yes > busycount=5 > subscribecontext=GXP_BLF > overlapdial=no > toneduration=200 > txgain=10.0 > rxgain=10.0 > channel => 1 > > ;;; line="2 WCTDM/0/1 FXSLS" > signalling=fxs_ks > callerid=asreceived > context=incoming_calls > group=1,2 > busydetect=yes > usecallerid=yes > hidecallerid=no > callwaiting=no > threewaycalling=yes > transfer=yes > echocancel=yes > pulsedial=no > callprogress=yes > busycount=5 > subscribecontext=GXP_BLF > txgain=10.0 > rxgain=10.0 > overlapdial=yes > channel => 2 > > ;;; line="3 WCTDM/0/2" > signalling=fxs_ks > callerid=asreceived > context=incoming_calls > group=1 > busydetect=yes > usecallerid=yes > hidecallerid=no > callwaiting=no > threewaycalling=yes > transfer=yes > echocancel=yes > pulsedial=no > callprogress=yes > busycount=5 > subscribecontext=GXP_BLF > txgain=10.0 > rxgain=10.0 > overlapdial=yes > channel => 3 > > ;;; line="4 WCTDM/0/3" > signalling=fxs_ks > callerid=asreceived > context=incoming_calls > group=1 > busydetect=yes > usecallerid=yes > hidecallerid=no > callwaiting=no > threewaycalling=yes > transfer=yes > echocancel=yes > pulsedial=no > callprogress=yes > busycount=5 > subscribecontext=GXP_BLF > txgain=20.0 > rxgain=10.0 > overlapdial=yes > channel => 4
(Not a real answer to your qustion, but still) On Fri, Apr 25, 2008 at 10:06:08AM +0200, Ian wrote:> Hi all > > I have a small problem here. > > We are running Asterisk 1.4.18 and libpri 1.4.3 (how can I check the > zaptel version again?) on an Intel core 2 duo 1.6Ghz, 2GB ram under > Ubuntu server.The current version of the loaded Zaptel modules (works as of kernel 2.6.12 or so) - cat /sys/module/zaptel/version The version of the installed module: modinfo zaptel | grep ^version> > I ran a top and saw that the server only have about 16Mb free ram, can > this be a possible cause?Generally, no. But where exactly do you see that? tzafrir at boole:~$ top -b -n 1 | head -n 5; free top - 15:59:54 up 51 days, 7:12, 10 users, load average: 0.00, 0.00, 0.00 Tasks: 132 total, 1 running, 124 sleeping, 7 stopped, 0 zombie Cpu(s): 0.7%us, 0.6%sy, 0.2%ni, 92.2%id, 6.1%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 505468k total, 497452k used, 8016k free, 115608k buffers Swap: 979956k total, 17980k used, 961976k free, 58608k cached total used free shared buffers cached Mem: 505468 497452 8016 0 115608 58608 -/+ buffers/cache: 323236 182232 Swap: 979956 17980 961976 My system has 182232 kB free, not just 8016 kB. The extra free memory is used by the system for improving access to the hardware rather than being wasted. 8016 kB are being wasted right now. In short: look at the second line at the output of 'free', or do the math yourself. -- Tzafrir Cohen icq#16849755 jabber:tzafrir.cohen at xorcom.com +972-50-7952406 mailto:tzafrir.cohen at xorcom.com http://www.xorcom.com iax:guest at local.xorcom.com/tzafrir
One other thing, On Fri, Apr 25, 2008 at 10:06:08AM +0200, Ian wrote:> Hi all > > I have a small problem here. > > We are running Asterisk 1.4.18 and libpri 1.4.3 (how can I check the > zaptel version again?) on an Intel core 2 duo 1.6Ghz, 2GB ram under > Ubuntu server. > > We have 4 analog line coming into the box via a TDM 800 wildcard with > echo cancel module and quad fxo modules. > > The server has been running smoothly with almost no problems for awhile now. > > Recently I started picking up problem with the voice clarity on our end, > it sounds like a mobile going through a low signal patch. I asked the > person on the other end and they can hear me loud and clear. > > I bumped the txgain up a notch a while back, can it be because of this?You bumped both txgain and rxgain. txgain is for audio Asterisk transmits to the device (the telephone line, in this case). rxgain is for audio recieves from the device. I suspect you don't really need both . And a value of 10 might actually influence the echo canceller. Try removing the two and see how things work. Generally this value (like most values) is applied on a reload (with asterisk 1.6 you can even use 'zap set {hw|sw}gain') . Generally remove all of those txgain and rxgain limes from your zapata.conf, and leave potentially just one near the top of the [channels] section - it will effect all of them. Use 'reload' or 'module reload chan_zap.so' to apply your changes and ignore the scary messages about the "signalling" being ignored. -- Tzafrir Cohen icq#16849755 jabber:tzafrir.cohen at xorcom.com +972-50-7952406 mailto:tzafrir.cohen at xorcom.com http://www.xorcom.com iax:guest at local.xorcom.com/tzafrir
To help you adjust your rxgain and txgain appropriately, you can ask your telco for the phone number for a "milliwatt test line". 10 is a pretty high number for the gain, although it DOES depend on your distance from the telco and the line quality. My rxgain ranges between 2.375 and 2.945 depending on the specific channel. I'm a half mile from the center. Ian wrote:> Hi all > > I have a small problem here. > > We are running Asterisk 1.4.18 and libpri 1.4.3 (how can I check the > zaptel version again?) on an Intel core 2 duo 1.6Ghz, 2GB ram under > Ubuntu server. > > We have 4 analog line coming into the box via a TDM 800 wildcard with > echo cancel module and quad fxo modules. > > The server has been running smoothly with almost no problems for awhile now. > > Recently I started picking up problem with the voice clarity on our end, > it sounds like a mobile going through a low signal patch. I asked the > person on the other end and they can hear me loud and clear. > > I bumped the txgain up a notch a while back, can it be because of this? > > I ran a top and saw that the server only have about 16Mb free ram, can > this be a possible cause? > > My zapata.conf and zaptel.conf are below. > > Thanks in advance > Ian > >> # less /etc/zaptel.conf >> # Autogenerated by /usr/sbin/zapconf on Fri Feb 29 16:12:07 2008 -- do >> not hand edit >> # Zaptel Configuration File >> # >> # This file is parsed by the Zaptel Configurator, ztcfg >> # >> # Span 1: WCTDM/0 "Wildcard TDM800P Board 1" (MASTER) >> fxsks=1 >> fxsks=2 >> fxsks=3 >> fxsks=4 >> # channel 5, WCTDM/0/4, no module. >> # channel 6, WCTDM/0/5, no module. >> # channel 7, WCTDM/0/6, no module. >> # channel 8, WCTDM/0/7, no module. >> >> # Global data >> >> loadzone = za >> defaultzone = za >> # less /etc/asterisk/zapata.conf >> [trunkgroups] >> ; define any trunk groups >> >> [channels] >> ;hardware channels >> >> ;default >> ;groep nommers en rede >> ; 1 => Landlyn >> ; 2 => Selfoon >> >> ; Span 1: WCTDM/0 "Wildcard TDM800P Board 1" (MASTER) >> ;;; line="1 WCTDM/0/0" >> signalling=fxs_ks >> callerid=asreceived >> context=incoming_calls >> group=2 >> busydetect=yes >> usecallerid=yes >> hidecallerid=no >> callwaiting=no >> threewaycalling=yes >> transfer=yes >> echocancel=yes >> pulsedial=no >> callprogress=yes >> busycount=5 >> subscribecontext=GXP_BLF >> overlapdial=no >> toneduration=200 >> txgain=10.0 >> rxgain=10.0 >> channel => 1 >> >> ;;; line="2 WCTDM/0/1 FXSLS" >> signalling=fxs_ks >> callerid=asreceived >> context=incoming_calls >> group=1,2 >> busydetect=yes >> usecallerid=yes >> hidecallerid=no >> callwaiting=no >> threewaycalling=yes >> transfer=yes >> echocancel=yes >> pulsedial=no >> callprogress=yes >> busycount=5 >> subscribecontext=GXP_BLF >> txgain=10.0 >> rxgain=10.0 >> overlapdial=yes >> channel => 2 >> >> ;;; line="3 WCTDM/0/2" >> signalling=fxs_ks >> callerid=asreceived >> context=incoming_calls >> group=1 >> busydetect=yes >> usecallerid=yes >> hidecallerid=no >> callwaiting=no >> threewaycalling=yes >> transfer=yes >> echocancel=yes >> pulsedial=no >> callprogress=yes >> busycount=5 >> subscribecontext=GXP_BLF >> txgain=10.0 >> rxgain=10.0 >> overlapdial=yes >> channel => 3 >> >> ;;; line="4 WCTDM/0/3" >> signalling=fxs_ks >> callerid=asreceived >> context=incoming_calls >> group=1 >> busydetect=yes >> usecallerid=yes >> hidecallerid=no >> callwaiting=no >> threewaycalling=yes >> transfer=yes >> echocancel=yes >> pulsedial=no >> callprogress=yes >> busycount=5 >> subscribecontext=GXP_BLF >> txgain=20.0 >> rxgain=10.0 >> overlapdial=yes >> channel => 4 >> > > > _______________________________________________ > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > > asterisk-users mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users >-- *Mojo Wentworth* HORAN & COMPANY, LLC 403 Lincoln Street, Suite 210 Sitka, AK 99835 (907) 747-6666 (907) 747-7417 - Fax mojo at horanappraisals.com