[asterisk-users] DMTF issues on voicemail on Zap

[Miguel Ruiz Velasco]

Hello,
My * installation has been working for over a year, and has been fine,
but when whe decided to try the voicemail and integrate it to our PBX
(pana TD500), it fails randomly.
The installation is more a IP-analog bridge than other thing; and the
DTMF recognition has been very good all the time, but specifically
when the pbx sends a "follow on ID" (the pbx send  #6<ext> and
#6*<ext> to retrieve), asterisk doesn't recognize the numbers almost
every time (may be 1 in 8 get's it right), but when there is a
positive match, it works correctly.
The strangest thing is asterisk doesn't invoke the i (invalid?) or t
extensions of the context when there is a negative match, it simply
hangs up!!!
I've tried putting verbose up to level 10, but it eports nothing.
The calls enter by a zap fxs interface, if this is of help.

Thanks for your help