If you believe in the Grandstream handbook, ask them why or how they do it or wrote it in their book. Otherwise, like Samuel already wrote, read the sipping-service-examples draft.
Nils
On Tuesday 05 July 2005 13:25, Iqbal wrote:
but in the first instance is a INVITE sent, and then it drops to a REFER, cause that is what the grandstream handbook says
Iqbal
Nils Ohlmeier wrote:
Hi,
take a look at the SDP of the INVITE. Probably it just puts the other side on-hold before sending the REFER. But I have no real clue how transfering without REFER should work. (Except a cumbersome solution with Replaces and 3pcc, which I have never.)
Nils
On Monday 04 July 2005 21:07, Iqbal wrote:
Hi
Should the call transfer use INVITE or REFER as a method, cause I seem, to be getting INVITE, but this then causes problems with authentication.
A <-->B then B transfer to C (all IP phones)
This transfer seems fine, but it uses INVITE, no REFER . All phones on same sip domain/server
Now when this setup changes
pstn <---->B and then B tried to transfer to C, we get nothing, well we get 404 , it check the !location setting, and says ur not allowed.
Is the REFER the first message to be sent, or is there a INVITE transaction first,
Iqbal
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