[asterisk-users] Understanding Call Handling In Asterisk
>>>Hi, >>> >>>I am a newbie to Asterisk; need help understanding three-way >>> conferencing & >>>call-transfer features implemented over standard extensions i.e. on a >>>TDM800P card (4 FXO + 4FXS) >>> >>>In Asterisk I have observed that if an extension is already >>> participating in >>>an active call (e.g. Ext A & Ext B communicating): >>> >>>1. An incoming call to one of these active extensions would be >>> presented >>>with call-wait beeps (e.g. Ext A receives call-wait beeps as Ext C is >>>attempting to call Ext A). >>> >>>2. The call waiting may be answered by pressing Hook-Flash, placing >>> the >>>previously active call on hold (e.g. C answered; A & C communicate; B >>> placed >>>on hold). >>> >>>3. The calls could be toggled by subsequent Hook-Flash's (e.g. A & B >>>communicate; C placed on hold). >>> >>> >> Yes, this is normal behaviour on pretty much every analogue PBX or telco >> switch. >>> >>> >>> >>>Queries: >>>1. If the extension which received call-wait beeps hangs-up then the >>> call >>>waiting/the call placed on hold returns as a new call. I was >>> expecting >>> the >>>call to be transferred (A hangs-up, B & C communicate), how could the >>> call >>>be transferred? I expected this feature to be available in Asterisk >>> as >>> this >>>is a very normal feature available on any PBX and used extensively in >>> Call >>>Transfer. >>> >>> >>> When you transfer a call, the person initiating the transfer has to be >>> MAKING a call. Example: Ext A receives a call from Ext B. Ext A wants >>> to transfer the call to Ext C. Ext A puts the first call on hold with a >>> hook flash, dials Ext C, then either waits for the Ext C to answer and >>> announces the transfer (e.g. an attended transfer) OR simply hangs up as >>> soon as the call to Ext C starts ringing (e.g. an un-attended or blind >>> transfer). >>> >> The behaviour you explain is not something available on any switch that >> I >> am aware of, and would be highly problematic if it were. If this >> "feature" were available, you could get a circumstance where two people >> who are calling you end up being bridged together on a call, unknown to >> you. As a bad example, your wife and your girlfriend end up talking to >> each other because you hung up while one of them call-waited you while >> you >> were talking to the other. >> > The scenario I was expecting was: > > When Ext. A & B are in speech and A is getting call wait beeps from C. > Now if Ext. A hangs up, C's call will not be transferred to B but will > come > as > a new call to A. Well if A hangs up after answering C (B on hold), then > C's > call > would be transferred to B when A hangs-up. > > Another point to be noted is when A & B are in speech. Either A could call > C > by putting B on hold 'or' C could call A & present itself as a > call-waiting. > The maximum loop count will never exceed 2 i.e. at any time you would > at-most have one active call & one call being held. > > Hence, either ways if the second call be an incoming or an outgoing > transfer > shall > never occur without the will of transferer ;-). >>> >>> >>>2. How could the extension that received call-wait beeps initiate a >>>three-way conference with the other extensions (A, B & C in three-way >>>conference)? I expected this feature to be available in Asterisk as >>> this is >>>a very normal feature available on any PBX and used extensively in >>> 3-way >>>Call Conference. >>> >>> >> Again, this is NOT a feature available on any analogue PBX that I am >> aware >> of. If it were, this would, again, mean that you may get unwanted >> parties >> connected together. With the above example, you answer your girlfriend's >> call while talking to your wife, and all three of you end up in the same >> conference. >> > What I was expecting is: 3-way conference would never be intiated by > pressing > another flash but with a special key sequence (Feature Access Code / > Flash + some dtmf digit). Suppose A & B were in speech and A is getting > call wait beeps from C. Now if A presses "flash", the call is toggled i.e. > A > & C are > brought in speech and B is placed on hold. Subsequent "flashes", would > also > have a similar behaviour. Well if A dials special key sequence (Feature > Access > Code / Flash + some dtmf digit), then a 3-way conference would be > established. > > Again this can never happen accidentally. > >> Unfortunately, POTS lines do not handle transfering multiple inbound >> calls very well (with call waiting). This is not an Asterisk issue, POTS >> lines were not designed to do anything other than handle a single call at >> a time. You may be able to handle transfering a call-waited call with >> DTMF signalling. I am certain someone else on the list will be able to >> give you a definitive answer on that. ___ -- Bandwidth and Colocat
[asterisk-users] Understanding Call Handling In Asterisk
> > >> - Original Message - >> From: Trevor Hammonds >> To: varun.rape...@spectross.com ; Asterisk Users Mailing List - >> Non-Commercial Discussion >> Sent: Sunday, May 31, 2009 8:57 AM >> Subject: Re: [asterisk-users] Understanding Call Handling In Asterisk >> >> >> >> >> On May 29, 2009, Varun Rapelly wrote: >> >>Hi, >> >>I am a newbie to Asterisk; need help understanding three-way >> conferencing & >>call-transfer features implemented over standard extensions i.e. on a >>TDM800P card (4 FXO + 4FXS) >> >>In Asterisk I have observed that if an extension is already >> participating in >>an active call (e.g. Ext A & Ext B communicating): >> >>1. An incoming call to one of these active extensions would be >> presented >>with call-wait beeps (e.g. Ext A receives call-wait beeps as Ext C is >>attempting to call Ext A). >> >>2. The call waiting may be answered by pressing Hook-Flash, placing >> the >>previously active call on hold (e.g. C answered; A & C communicate; B >> placed >>on hold). >> >>3. The calls could be toggled by subsequent Hook-Flash's (e.g. A & B >>communicate; C placed on hold). >> >> > Yes, this is normal behaviour on pretty much every analogue PBX or telco > switch. >> >> >> >>Queries: >>1. If the extension which received call-wait beeps hangs-up then the >> call >>waiting/the call placed on hold returns as a new call. I was expecting >> the >>call to be transferred (A hangs-up, B & C communicate), how could the >> call >>be transferred? I expected this feature to be available in Asterisk as >> this >>is a very normal feature available on any PBX and used extensively in >> Call >>Transfer. >> >> >> When you transfer a call, the person initiating the transfer has to be >> MAKING a call. Example: Ext A receives a call from Ext B. Ext A wants >> to transfer the call to Ext C. Ext A puts the first call on hold with a >> hook flash, dials Ext C, then either waits for the Ext C to answer and >> announces the transfer (e.g. an attended transfer) OR simply hangs up as >> soon as the call to Ext C starts ringing (e.g. an un-attended or blind >> transfer). >> > The behaviour you explain is not something available on any switch that I > am aware of, and would be highly problematic if it were. If this > "feature" were available, you could get a circumstance where two people > who are calling you end up being bridged together on a call, unknown to > you. As a bad example, your wife and your girlfriend end up talking to > each other because you hung up while one of them call-waited you while you > were talking to the other. > The scenario I was expecting was: When Ext. A & B are in speech and A is getting call wait beeps from C. Now if Ext. A hangs up, C's call will not be transferred to B but will come as a new call to A. Well if A hangs up after answering C (B on hold), then C's call would be transferred to B when A hangs-up. Another point to be noted is when A & B are in speech. Either A could call C by putting B on hold 'or' C could call A & present itself as a call-waiting. The maximum loop count will never exceed 2 i.e. at any time you would at-most have one active call & one call being held. Hence, either ways if the second call be an incoming or an outgoing transfer shall never occur without the will of transferer ;-). >> >> >>2. How could the extension that received call-wait beeps initiate a >>three-way conference with the other extensions (A, B & C in three-way >>conference)? I expected this feature to be available in Asterisk as >> this is >>a very normal feature available on any PBX and used extensively in >> 3-way >>Call Conference. >> >> > Again, this is NOT a feature available on any analogue PBX that I am aware > of. If it were, this would, again, mean that you may get unwanted parties > connected together. With the above example, you answer your girlfriend's > call while talking to your wife, and all three of you end up in the same > conference. > What I was expecting is: 3-way conference would never be intiated by pressing another flash but with a special key sequence (Feature Access Code / Flash + some dtmf digit). Suppose A & B were in speech and A is getting call wait beeps from C. Now if A presses "flash", the call is toggled i.e. A & C are brought in speech and B
[asterisk-users] Understanding Call Handling In Asterisk
> > >> - Original Message - >> From: Trevor Hammonds >> To: varun.rape...@spectross.com ; Asterisk Users Mailing List - >> Non-Commercial Discussion >> Sent: Sunday, May 31, 2009 8:57 AM >> Subject: Re: [asterisk-users] Understanding Call Handling In Asterisk >> >> >> >> >> On May 29, 2009, Varun Rapelly wrote: >> >>Hi, >> >>I am a newbie to Asterisk; need help understanding three-way >> conferencing & >>call-transfer features implemented over standard extensions i.e. on a >>TDM800P card (4 FXO + 4FXS) >> >>In Asterisk I have observed that if an extension is already >> participating in >>an active call (e.g. Ext A & Ext B communicating): >> >>1. An incoming call to one of these active extensions would be >> presented >>with call-wait beeps (e.g. Ext A receives call-wait beeps as Ext C is >>attempting to call Ext A). >> >>2. The call waiting may be answered by pressing Hook-Flash, placing >> the >>previously active call on hold (e.g. C answered; A & C communicate; B >> placed >>on hold). >> >>3. The calls could be toggled by subsequent Hook-Flash's (e.g. A & B >>communicate; C placed on hold). >> >> > Yes, this is normal behaviour on pretty much every analogue PBX or telco > switch. >> >> >> >>Queries: >>1. If the extension which received call-wait beeps hangs-up then the >> call >>waiting/the call placed on hold returns as a new call. I was expecting >> the >>call to be transferred (A hangs-up, B & C communicate), how could the >> call >>be transferred? I expected this feature to be available in Asterisk as >> this >>is a very normal feature available on any PBX and used extensively in >> Call >>Transfer. >> >> >> When you transfer a call, the person initiating the transfer has to be >> MAKING a call. Example: Ext A receives a call from Ext B. Ext A wants >> to transfer the call to Ext C. Ext A puts the first call on hold with a >> hook flash, dials Ext C, then either waits for the Ext C to answer and >> announces the transfer (e.g. an attended transfer) OR simply hangs up as >> soon as the call to Ext C starts ringing (e.g. an un-attended or blind >> transfer). >> > The behaviour you explain is not something available on any switch that I > am aware of, and would be highly problematic if it were. If this > "feature" were available, you could get a circumstance where two people > who are calling you end up being bridged together on a call, unknown to > you. As a bad example, your wife and your girlfriend end up talking to > each other because you hung up while one of them call-waited you while you > were talking to the other. > The scenario I was expecting was: When Ext. A & B are in speech and A is getting call wait beeps from C. Now if Ext. A hangs up, C's call will not be transferred to B but will come as a new call to A. Well if A hangs up after answering C (B on hold), then C's call would be transferred to B when A hangs-up. Another point to be noted is when A & B are in speech. Either A could call C by putting B on hold 'or' C could call A & present itself as a call-waiting. The maximum loop count will never exceed 2 i.e. at any time you would at-most have one active call & one call being held. Hence, either ways if the second call be an incoming or an outgoing transfer shall never occur without the will of transferer ;-). >> >> >>2. How could the extension that received call-wait beeps initiate a >>three-way conference with the other extensions (A, B & C in three-way >>conference)? I expected this feature to be available in Asterisk as >> this is >>a very normal feature available on any PBX and used extensively in >> 3-way >>Call Conference. >> >> > Again, this is NOT a feature available on any analogue PBX that I am aware > of. If it were, this would, again, mean that you may get unwanted parties > connected together. With the above example, you answer your girlfriend's > call while talking to your wife, and all three of you end up in the same > conference. > What I was expecting is: 3-way conference would never be intiated by pressing another flash but with a special key sequence (Feature Access Code / Flash + some dtmf digit). Suppose A & B were in speech and A is getting call wait beeps from C. Now if A presses "flash", the call is toggled i.e. A & C are brought in speech and B
Re: [asterisk-users] Understanding Call Handling In Asterisk
> > >> - Original Message - >> From: Trevor Hammonds >> To: varun.rape...@spectross.com ; Asterisk Users Mailing List - >> Non-Commercial Discussion >> Sent: Sunday, May 31, 2009 8:57 AM >> Subject: Re: [asterisk-users] Understanding Call Handling In Asterisk >> >> >> >> >> On May 29, 2009, Varun Rapelly wrote: >> >>Hi, >> >>I am a newbie to Asterisk; need help understanding three-way >> conferencing & >>call-transfer features implemented over standard extensions i.e. on a >>TDM800P card (4 FXO + 4FXS) >> >>In Asterisk I have observed that if an extension is already >> participating in >>an active call (e.g. Ext A & Ext B communicating): >> >>1. An incoming call to one of these active extensions would be >> presented >>with call-wait beeps (e.g. Ext A receives call-wait beeps as Ext C is >>attempting to call Ext A). >> >>2. The call waiting may be answered by pressing Hook-Flash, placing >> the >>previously active call on hold (e.g. C answered; A & C communicate; B >> placed >>on hold). >> >>3. The calls could be toggled by subsequent Hook-Flash's (e.g. A & B >>communicate; C placed on hold). >> >> > Yes, this is normal behaviour on pretty much every analogue PBX or telco > switch. >> >> >> >>Queries: >>1. If the extension which received call-wait beeps hangs-up then the >> call >>waiting/the call placed on hold returns as a new call. I was expecting >> the >>call to be transferred (A hangs-up, B & C communicate), how could the >> call >>be transferred? I expected this feature to be available in Asterisk as >> this >>is a very normal feature available on any PBX and used extensively in >> Call >>Transfer. >> >> >> When you transfer a call, the person initiating the transfer has to be >> MAKING a call. Example: Ext A receives a call from Ext B. Ext A wants >> to transfer the call to Ext C. Ext A puts the first call on hold with a >> hook flash, dials Ext C, then either waits for the Ext C to answer and >> announces the transfer (e.g. an attended transfer) OR simply hangs up as >> soon as the call to Ext C starts ringing (e.g. an un-attended or blind >> transfer). >> > The behaviour you explain is not something available on any switch that I > am aware of, and would be highly problematic if it were. If this > "feature" were available, you could get a circumstance where two people > who are calling you end up being bridged together on a call, unknown to > you. As a bad example, your wife and your girlfriend end up talking to > each other because you hung up while one of them call-waited you while you > were talking to the other. > The scenario I was expecting was: When Ext. A & B are in speech and A is getting call wait beeps from C. Now if Ext. A hangs up, C's call will not be transferred to B but will come as a new call to A. Well if A hangs up after answering C (B on hold), then C's call would be transferred to B when A hangs-up. Another point to be noted is when A & B are in speech. Either A could call C by putting B on hold 'or' C could call A & present itself as a call-waiting. The maximum loop count will never exceed 2 i.e. at any time you would at-most have one active call & one call being held. Hence, either ways if the second call be an incoming or an outgoing transfer shall never occur without the will of transferer ;-). >> >> >>2. How could the extension that received call-wait beeps initiate a >>three-way conference with the other extensions (A, B & C in three-way >>conference)? I expected this feature to be available in Asterisk as >> this is >>a very normal feature available on any PBX and used extensively in >> 3-way >>Call Conference. >> >> > Again, this is NOT a feature available on any analogue PBX that I am aware > of. If it were, this would, again, mean that you may get unwanted parties > connected together. With the above example, you answer your girlfriend's > call while talking to your wife, and all three of you end up in the same > conference. > What I was expecting is: 3-way conference would never be intiated by pressing another flash but with a special key sequence (Feature Access Code / Flash + some dtmf digit). Suppose A & B were in speech and A is getting call wait beeps from C. Now if A presses "flash", the call is toggled i.e
Re: [asterisk-users] Understanding Call Handling In Asterisk
On May 29, 2009, Varun Rapelly wrote: > Hi, > > I am a newbie to Asterisk; need help understanding three-way conferencing & > > call-transfer features implemented over standard extensions i.e. on a > TDM800P card (4 FXO + 4FXS) > > In Asterisk I have observed that if an extension is already participating > in > an active call (e.g. Ext A & Ext B communicating): > > 1. An incoming call to one of these active extensions would be presented > with call-wait beeps (e.g. Ext A receives call-wait beeps as Ext C is > attempting to call Ext A). > > 2. The call waiting may be answered by pressing Hook-Flash, placing the > previously active call on hold (e.g. C answered; A & C communicate; B > placed > on hold). > > 3. The calls could be toggled by subsequent Hook-Flash's (e.g. A & B > communicate; C placed on hold). > Yes, this is normal behaviour on pretty much every analogue PBX or telco switch. > Queries: > 1. If the extension which received call-wait beeps hangs-up then the call > waiting/the call placed on hold returns as a new call. I was expecting the > call to be transferred (A hangs-up, B & C communicate), how could the call > be transferred? I expected this feature to be available in Asterisk as this > > is a very normal feature available on any PBX and used extensively in Call > Transfer. > When you transfer a call, the person initiating the transfer has to be MAKING a call. Example: Ext A receives a call from Ext B. Ext A wants to transfer the call to Ext C. Ext A puts the first call on hold with a hook flash, dials Ext C, then either waits for the Ext C to answer and announces the transfer (e.g. an attended transfer) OR simply hangs up as soon as the call to Ext C starts ringing (e.g. an un-attended or blind transfer). The behaviour you explain is not something available on any switch that I am aware of, and would be highly problematic if it were. If this "feature" were available, you could get a circumstance where two people who are calling you end up being bridged together on a call, unknown to you. As a bad example, your wife and your girlfriend end up talking to each other because you hung up while one of them call-waited you while you were talking to the other. > 2. How could the extension that received call-wait beeps initiate a > three-way conference with the other extensions (A, B & C in three-way > conference)? I expected this feature to be available in Asterisk as this is > > a very normal feature available on any PBX and used extensively in 3-way > Call Conference. > Again, this is NOT a feature available on any analogue PBX that I am aware of. If it were, this would, again, mean that you may get unwanted parties connected together. With the above example, you answer your girlfriend's call while talking to your wife, and all three of you end up in the same conference. Unfortunately, POTS lines do not handle transfering multiple inbound calls very well (with call waiting). This is not an Asterisk issue, POTS lines were not designed to do anything other than handle a single call at a time. You may be able to handle transfering a call-waited call with DTMF signalling. I am certain someone else on the list will be able to give you a definitive answer on that. Sincerely, Trevor Hammonds ___ -- 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
[asterisk-users] Understanding Call Handling In Asterisk
Hi, I am a newbie to Asterisk; need help understanding three-way conferencing & call-transfer features implemented over standard extensions i.e. on a TDM800P card (4 FXO + 4FXS) In Asterisk I have observed that if an extension is already participating in an active call (e.g. Ext A & Ext B communicating): 1. An incoming call to one of these active extensions would be presented with call-wait beeps (e.g. Ext A receives call-wait beeps as Ext C is attempting to call Ext A). 2. The call waiting may be answered by pressing Hook-Flash, placing the previously active call on hold (e.g. C answered; A & C communicate; B placed on hold). 3. The calls could be toggled by subsequent Hook-Flash's (e.g. A & B communicate; C placed on hold). Queries: 1. If the extension which received call-wait beeps hangs-up then the call waiting/the call placed on hold returns as a new call. I was expecting the call to be transferred (A hangs-up, B & C communicate), how could the call be transferred? I expected this feature to be available in Asterisk as this is a very normal feature available on any PBX and used extensively in Call Transfer. 2. How could the extension that received call-wait beeps initiate a three-way conference with the other extensions (A, B & C in three-way conference)? I expected this feature to be available in Asterisk as this is a very normal feature available on any PBX and used extensively in 3-way Call Conference. Regds. Varun ___ -- 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
