Hello,
I have a S20 PBX with a 2 fxo module. The analog lines come from fiber router that has two outputs (two line with the same number). When a call arrives both lines ring simultaneous, so the PBX considers them as two distinct calls. Every time in the phone I see a call and a call waiting from the same incoming number.
Is it possible filter the second simultaneous call, so in the phone I see them coming one at a time
Thank you very much
No. As these are analog, the phone system only sees the ring coming from the fiber router. When it sees the ring, it has no choice but to answer as to the PBX, there are two distinct and individual calls.
The question is, why is the router delivering the call on two lines simultaneously and what would happen if a second call were to come into the router at the same time it is ringing the PBX?
Yours is a good question, but my ISP (Telecom Italia) tells me that this is so and cannot be changed.
I was hoping the PBX could determine that the second call came from the same number and then filter it
Thanks you anyway
How about setting the inbound destination to IVR? Let caller press a key to ring the extension. This prevents the second call to go directly to the extension.
The second call would be hangup if timeout in the IVR.
Is it possible to get one more number from carrier, then there will be two numbers for the two lines. It may aviod the simultaneously ring.
Well, again, what is the purpose of the two lines?
1. Do they both stop ringing when one is answered?
2. If you are in a call on one (busy), can another call come in?
3. If you are in a call on one, can an outbound call occur on the other?
If #1 is yes and #2 & #3 is no -
Then disconnect one of the lines as it seemingly serves no purpose for the PBX.
If uncertain, then use what Riddhe suggested and allow the call to go to an IVR.
There really is no such thing as a filter for the condition.
@Larry Neblett
..... what would happen if a second call were to come into the router at the same time it is ringing the PBX?
I tried and the line is busy
@Riddhe Marcenas
It may be a good idea, I will try to implement it
@Graham Aker
I thought about it too, but my client doesn't want to have two different numbers
@Larry Neblett
The purpose of two lines is to make and/or receive two call at the same time.
1 --> Yes
2 --> Yes
3 --> Yes
but the two fxo line of the router ring simultaneously and not in sequence as happens in an ISDN line.
I understand that the device has the apparent capability of delivering two calls, but this assumes that the calls are different and using a different number or busy rollover is set at the provider such that the call is not the same on the vacant line.
However, in your case, none of the benefit of having two lines is apparently available for a PBX as you have no rollover and/or can't receive a new call (no other number to dial) when the line is busy and, I assume, can't call out either.
So, this is the question of what is the purpose? If there is no purpose as it relates to a PBX, then disconnecting one line should have no ill effect. If it were not connected to a PBX, but to analog phones instead, then perhaps there is no harm and presumably it allows more phones to be connected without exceeding the ringer equivalency on a line. As it stands, it is merely an inconvenience as from the PBX perspective it is delivered as two calls.
@Larry Neblett
Larry you're wrong, I can make and receive a second call when the fisrt line is busy, the only time I can't do that is when the two line are ringing simultaneously, so when I answer the second line became free.
I believe that many other people in Italy who have switched from ISDN to VOIP lines on FTTC have the same problem as me
My apologies, I did not correlate the answers back to the questions.
In any event, there does not appear to be a direct solution to the issue other than trying out Riddhe's suggestion. As he stated, going to an IVR will prevent the phone from seeing two calls as the IVR will answer both, but the caller input to the IVR will only be seen on one line thereby preventing the other from being able to progress past the IVR.
Ti rispondo in Italiano:
Devi creare un interno "virtuale" e un RING GROUP con questo interno. La chiamata che arriva da FXO1 la inoltri al tuo IVR, La chiamata che arriva da FXO2 la inoltri al GRUPPO che ha FAILOVER Destination il tuo IVR dopo 10 secondi. In questo modo il RING GROUP non sente più segnale quando la prima chiamata ha risposto.
@Max Sartini
OK Max ma se sulla FXO1 nessuno risponde entro i 10 secondi a questo punto mi arriva comunque la doppia chiamata nei telefoni......
Purtroppo credo che una vera e propria soluzione a questo problema non ci sia, come anche ammesso dalla Telecom(TIM) l'unica possibilità è avere due numeri diversi per le due linee e fare un trasferimento di chiamata dalla prima alla seconda su occupato. In questo modo in ricezione non ci sono problemi ma in uscita la seconda telefonata ovviamente esce con il secondo numero.
Telecom sta spingendo molto per abbandonare ISDN in favore delle linee voip su fibra ma sono due servizi totalmente diversi e in ambito business ISDN rimane nettamente meglio sia come qualità, stabilità e configurabilità della linea.
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