[Asterisk-Users] Caller Hears Ring During Attended Transfer?

[Eric Wieling aka ManxPower]

Eric Wieling aka ManxPower wrote:
> Daryll Strauss wrote:
> 
>> I'm running Asterisk 1.0.7 and SPA-3000 Firmware 2.0.13g.
>> A call comes in to my asterisk box via SIP (the Sipura isn't involved)
>> and I answer it using an analog phone on the Sipura. I then decide to
>> forward it to another phone. I flash the line, dial the new extension,
>> and flash again. At this point I and the caller hear the destination
>> phone ring. If I then hang up, the caller stops hearing the ring.
>> Eventually the voicemail picks up and the caller hears the
>> announcement and everything works as normal. It's just rather
>> disconcerting for the caller to not hear anything.
>>
>> Is this an Asterisk bug, Sipura bug, or operator (me) error?

Happens with Polycom phones as well.  It may be related to this message 
when a transfer happens:

Unable to handle indication 3 for 'SIP/0004f201e4b3-a-682d'