[asterisk-users] MeetMe Error

[Manolet Gmail]

Hi! i have an error using the meetme aplication, and just dont work..
my meetme.conf is:

[rooms]
conf = 700

i calling from a sip phone, the extension number is 600. there is the error:

Executing [700 at numberplan-custom-1:1] MeetMe("SIP/600-09111e58",
"700|MI") in new stack
WARNING[20055]: channel.c:3024 ast_request: No channel type registered for 'zap'
WARNING[20055]: app_meetme.c:755 build_conf: Unable to open pseudo
channel - trying device
WARNING[20055]: app_meetme.c:758 build_conf: Unable to open pseudo device
<SIP/600-09111e58> Playing 'conf-invalid' (language 'es')
Spawn extension (numberplan-custom-1, 700, 1) exited non-zero on
'SIP/600-09111e58'

i dont have any zap interface. how to solve this?