asterisk users - Aug 2006 - Problem with distortion of initial voicemail prompt

I'm having a problem where the very first words of the Asterisk voicemail
system prompt are distorted into a loud ear-splitting beep. When I dial my
VoiceMailMain extension I get this loud beep followed by the rest of the
initial voicemail system prompt.  After that everything works fine.  I've
have this problem under both v1.2.6 (self-compiled) and now under 1.2.10
(under Astlinux).

My handset is connected to my asterisk box through an iaxy.  With the
exception of this voicemail prompt problem everything else seems to work
fine.  The relevant portions of my voicemail.conf and extensions.conf are
list below:

Voicemail.conf
[zonemessages]
eastern=America/New_York|'vm-received' Q 'digits/at' IMp
[general]
format=wav|gsm|wav49
serveremail=astlinux
attach=yes
skipms=3000
maxsilence=10
silencethreshold=128
maxlogins=3
emaildateformat=%A, %B %d, %Y at %r
tz=eastern
saycid=yes
[default]
1000 => 07055,John Q Public,john@public.com,,tz=eastern
[other]

Extensions.conf
[general]
static=yes
writeprotect=yes
autofallthrough=yes
clearglobalvars=no
[globals]
[default]
[1000]
type=friend
host=dynamic
context=context1
secret=password
mailbox=1000
dtmfmode=rfc2833
allow=ulaw
insecure=very
exten => 8500,1,VoiceMailMain,1000
exten => 8500,2,Hangup
[iaxy]
type=friend
host=dynamic
context=home
secret=iaxy
dtmfmode=rfc2833
mailbox=1000
allow=ulaw
insecure=very

Frank Tarczynski wrote:
> I'm having a problem where the very first words of the Asterisk
voicemail
> system prompt are distorted into a loud ear-splitting beep. When I dial my
> VoiceMailMain extension I get this loud beep followed by the rest of the
> initial voicemail system prompt.  After that everything works fine. 
I've
> have this problem under both v1.2.6 (self-compiled) and now under 1.2.10
> (under Astlinux).
> 
> My handset is connected to my asterisk box through an iaxy.  With the
> exception of this voicemail prompt problem everything else seems to work
> fine.  The relevant portions of my voicemail.conf and extensions.conf are

This problem was caused by the IAXy always telling Asterisk that the
connected phone supports ADSI, and then the Voicemail application trying
to initialize ADSI on the phone.

In the next release of Asterisk (1.4), this can be turned off for IAX
devices in iax.conf by setting adsi=no for them.