that might be the case... this was helpful
but then I wonder what other hardware choice there is to have 2-3 analog trunk lines plugged into my asterisk ?
[EMAIL PROTECTED] wrote:
Hi,
Groundstart signalling is not supported on Digium (or clone) X100P and TDM400P FXO cards. I recently found this out from Digium support. I posted a message about this a few days ago. Be aware that you will lose the anti-glare benefit of groundstart if you switch your lines to loopstart. (Glare is when an incoming call and an outgoing call are started at the same time - The person calling you heres you dialing digits to make an outbound call and then you don't hear any ringing, say hello and are confused for a second about what just happened.) Here it is again -
...
I was surprised to be told by a Digium support person today that Digium's FXO interfaces (X100P, TDM400P FXO modules) don't support groundstart signalling. This surprises me because as far as I know in a typical PBX configuration with analog trunk lines, groundstart signalling is the only way to prevent Glare.
I just purchased two TDM400P's for a system I'm building to replace our office PBX (Altigen). Since there are no statements anywhere on Digium's website about lack of groundstart support (Actually, to the contrary they boast about all the signalling support in their sales slick), I now need to decide if I want to return the products and switch to a T1 / channel bank configuration.
I remember when we setup our current Altigen PBX, we had problems with glare and disconnect detection and so I went through the process of figuring out what was going on and learning about groundstart. After we switched to groundstart everything worked great.
In a high use system, it's highly likely that a trunk will experience glare, which is annoying for incoming callers and system users. I'm just a bit baffled as to why Digium wouldn't support groundstart on cards designed to be PBX trunk lines.
Someone please tell me I'm missing something.
Mark
yes, fxsks and fxsls are working fine. only fxsgs is giving me the error. and that is how my lines are configured by the phone company. I'll probably call them and try to change the lines ...
I'm not at my box right now, but if I remember correctly, I got this exact same error when I tried playing around with groundstart. At the time, I figured I was doing something wrong, or that my line did not support gs, and the card somehow knew that.
I was able to configure for the other two types of signalling just fine.
--shaun
--- gabriel <[EMAIL PROTECTED]> wrote:
http://lists.digium.com/mailman/listinfo/asterisk-usershello, I just installed 2 brand new x100p cards into my linux system. Everything compliled and worked fine from the first try. Hoewver the phone lines I will use with this system have groundstart signaling. I have tried to change the zaptel.conf and zapata.conf to use this type of signaling but ztcfg gives me an error every time with the new configuration. Bellow are the config files and the actual error. Again, everything works fine with the default signaling (fxsks)
zaptel.conf --- loadzone = us defaultzone = us
fxsgs=1-2
zapata.conf --- [channels] callwaiting=yes callwaitingcallerid=yes threewaycalling=yes transfer=yes cancallforward=yes
echocancel=yes echocancelwhenbridged=no
rxgain=0.0 txgain=0.0
immediate=no
context=default signalling=fxs_gs channel=1-2
and the error I am getting is: -- [EMAIL PROTECTED] root]# ztcfg -vvv
Zaptel Configuration ======================
Channel map:
Channel 01: FXS Groundstart (Default) (Slaves: 01) Channel 02: FXS Groundstart (Default) (Slaves: 02)
2 channels configured.
ZT_CHANCONFIG failed on channel 1: Invalid argument (22) Did you forget that FXS interfaces are configured with FXO signalling and that FXO interfaces use FXS signalling? [EMAIL PROTECTED] root]# ---
I don't know why I am getting this the only choice I have is to have the phone company change the signaling but before doing that I was thinking that maybe somebody used this signaling before and can help.
thank you, gabriel
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