[SIPForum-discussion] Blind Transfer

[Siva M-Q16748]

Hi Robert

Thanks 

Any Idea how do we achieve this using the analog phone ?? 

Thanks
Siva M 

-----Original Message-----
From: Robert Sparks [mailto:rjsparks at nostrum.com] 
Sent: Wednesday, April 04, 2007 11:21 AM
To: Siva M-Q16748
Cc: discussion at sipforum.org
Subject: Re: [SIPForum-discussion] Blind Transfer

A very long time ago, there was a proposal in the IETF that used an Also
header in a BYE message achieve this kind of transfer.
Many problems were found with the idea and it was abandoned. REFER is
the tool you want to use.

RjS

On Apr 4, 2007, at 12:38 AM, Siva M-Q16748 wrote:

> Hi
>
> Can anyone point me to some call flows which will explains Blind
> Transfer using BYE method .
>
> Basically I want to do Blind transfer with a analog phone hooked up to
> Analog Adapter which will convert Analog to SIP .
>
> I press Hook Flash button to make the second call and ended up with
> consultive transfer .The device sends INVITE for third party after
> Hookflash is pressed and later REFER with replaces header.But Blind
> Transfer with SIP phones sends REFER initially instead of INVITE .
>
> Heard somewhere that Blind transfer can be achieved using BYE .. Any
> idea ??
>
>
> Siva M
>
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