If it's about VoIP, SIP or Internet Telephony but it doesn't seem to fit anywhere else, post it here.
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By Keith
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I have recently changed over to VOIP with Fibrus which is a Northern Ireland based company and would like to know if it is possible to access Ring Back When Busy on VOIP.
I was able to dial 5 on the old land line when I rang a number and received the busy tone and my phone rang when the line became free.
Is there a similar facility on VOIP (either free or through subscription) and if not does anyone know if there is any similar option available on a Mobile.
I would be very dependant on it when trying to book a doctor's appointment as the Medical Centre phone is always busy.

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