- This topic has 7 replies, 1 voice, and was last updated 14 years ago by MIFO.
21st October 2005 at 04:58 #42718SivakumarGuest
A party is in conversation with B party. During this time C party calls the B party and C listens the call waiting announcement.
Consider that all 3 subscribers are in the differnet MSC.
During this time,how many airinterface channels are seized by B party.
My question is will there be any assignment request from the B party BSC to the MSC for the new call waiting call??(hope u guys understand my question)
When B party holds the ongoing call of A party and starts the conversation with C party, During this time how many channels are siezed?24th October 2005 at 10:39 #42719BokoGuest
As I know there is no change in the air interface – one call or multiple calls in a conference call doesn’t make any difference.31st October 2005 at 16:54 #42720VijayGuest
Conferenceing controlled in MSC which connects all three external Circuits toiwards the A=Interface CKT towards BSS.
Regards10th May 2007 at 10:29 #42721mifoGuest
Is there someone that can tell me or confirm if the signaling for Call Waiting go through SACCH.
If not what Logical CHannel is used for Call Waiting
Thank you very much
Regards10th May 2007 at 11:42 #42722PixGuest
the orignating mobile is already on TCH (cf. message flow, message “ALERTING”)
(is that what you meant by call waiting ?)11th May 2007 at 14:36 #42723MIFOGuest
Thank you Pix for the answer,
it means that signaling can use as well TCH
I didn’t know that
If I take the example of an SMS,
SDCCH is used on Idle mode, and SACCH on Active mole. I believed that it was the same for the call waiting signaling (I believed that the signal that tell there is an other call go through SACCH) but it seems not.
Regards11th May 2007 at 14:50 #42724PixGuest
actually the alerting is on the FACCH, which is a “sub” channel of the TCH.
glad i could help 🙂
regards11th May 2007 at 15:01 #42725MIFOGuest
Thank you Pix,
I should have known this,
In fact it s logical
because SACCH is just reserved for measurement and SMS
so the alerting is on the Hand over channel :FACCH