[asterisk-ss7] chan_ss7 and transcoding

[Anton]

Does anyone able to play any prompt to a chan_ss7 directly? 
Means on the same PC which carries chan_ss7. I cannot, 
Looks like there is no transcoding becoming possible in 
that case. Channel just imediatelly hangups. Even if i make 
Ring in dialplan. But if audio comes from any of the 
(SIP/IAX/etc) channels and than routed to a chan_ss7 - than 
everything is fine. But I can play prompts to a chan_ss7 
only from another PC over (for instance) IAX2.

???

Regards,
Anton