Call transfer only on one channel?

I’m dialing out to phone A then when answered dialing phone B, similar to how click-to-call works. Phone A is bridged to Phone B which opens a second channel. Sip provider is billing me duration of both calls since there are two channels in use. Is there anyway to avoid this?

Thanks.

Hi .

Think about it, you are making two calls. why do you expect to only billed for 1 ?

Ian

Yep, I got that. My question really was if there was something in * to dial out or transfer on the same channel, without creating an additional channel. Or, once phone B has answered and the call bridged hangup the original channel.