[chan-capi-users] no connection on attended transfer with ISDN

[Sven Kalinowski]

Hello chan_capi_users-list,

I can´t complete attended transfers, if I use a ISDN-phone to do the 
transfer.
Doing the transfer with a sip-phone works, even if I transfer an 
incomming ISDN-call to another ISDN-phone.

Doing an attended transfer with ISDN-phones:
1. caller calls callee (I´ll call him transferrer from now)
2. transferrer presses Transfer button
3. caller get MoH, transferrer dials destination
4. transferrer talks to destination
5. transferrer hangs up
6. MoH stops on calller - and a dialtone is played to the caller , 
destination hears silence
7. destination hangs up an caller gets diconnected

I don´t know if this matter is about chan_capi at all ... but after 
searching the web for some days, I´ve to start ask somewhere.
Any Ideas about that ???


I use
- asterisk-1.4.23.2
- two eicon diva 4bri-8m v2 cards
- and chan_capi-1.1.2

no matter if I use holdtype= hold or local at capi.conf,
the problem stays the same (execpt that I don´t get MoH at holdtype=hold)

You will find logs of some transfers with capi debug:
attended transfer ISDN -> ISDN -> ISDN fails:
http://pastebin.com/f5d7e26aa

the same with a sip phone ISDN -> SIP -> ISDN working:
http://pastebin.com/f30099481

and last a working UNattended transfer: ISDN -> ISDN -> ISDN:
http://pastebin.com/f477aa9e7

Many thanks in advance

Sven Kalinowski