I have a TDM11b where I use the FXO module to get
the incomming call from phone company and the FSX
module on the PAP2-NA to send the signal out to
all my pots in the house. I also have a Grandstream
GXV 3000 connected to my network switch.
When i’m dialing out (SIP->ZAP) I can speed-up the
dialing (instead of letting it time out and do the
dialing) and type a # after the number.
But for the incomming calls (ZAP->SIP) I can hear the
Grandstream phone (or any other softphones) ring two
times and then the PAP2-NA sends the signal out to
the whole house.
With this I hear two signals on the pots in the house but
the caller hear four signals!
I added “immediate=yes” to the FXO module in <zapata.conf>
; Channel 4 FXO port to incomming analog line
cidsignalling=dtmf ; Sweden
cidstart=polarity ; Sweden
signalling=fxs_ks
usecallerid=yes
callerid=asreceived
transfer=yes
immediate=yes
context=pts_incoming
answeronpolarityswitch=yes
hanguponpolarityswitch=yes
channel => 4
With this I can hear the Grandstream phone ring one time and on
the second signal the whole house (PAP2 v2 -> POTS) is ringing.
During this single signal on the POTS the caller could hear 2 - 3 signals.
From what I have read, I cannot get it better than this if I want to use the callerID function.
But it looks like it speeded the dialing it up a little!
The caller ID information is transmitted, in North America, between the first and second ring of the incoming call. In other parts of the world it may work differently, but in North America it’s transmitted in the interval between the first and second ring.
Your FXO card was simply waiting for all of the information about the call before it connected the call to your SIP stations.
If you configure for immediate=yes, your call will proceed after the first ring has been received. Since the caller ID information is sent after that, you will not have caller ID information on any of your SIP stations.