Title: Help!!!!!
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DEAN RENU
LET ME KNOW ONCE YOUR GSM INTERFACE IS DONE, WE
WILL BE INTERESTED TO BUY THESE
THANKS AND KIND REGARDS
ANDY SINGH
+1 416 856 7047
----- Original Message -----
Sent: Saturday, September 11, 2004 2:40
PM
Subject: [Asterisk-Users] Help!!!!!
Hello all,
I am an MTech student and currently working on a project on building
GSM air interface to fixed line. I am making use of Asterisk soft PBX. I am
stuck at a point regarding this. As far as I understood from the
available Asterisk documentation that Asterisk can easily plug into it the
various programming interfaces and different codecs in it can seemlessly talk
to one another. Asterisk has a codec translator API for GSM. Is it possible to
make Asterisk directly communicate with a GSM air interface module thourgh the
GSM codec API ? That means that i would be making a call from IP phone that
wil be routed through the asterisk to the GSM interface. If it is possible,
where should i make the necessay changes to enable this
interworking.
Can i make asterisk to work as a softphone by
itself and with the help of sound card can i route the call to a GSM circuit.
Basically i want to connect the incoming landline call to a GSM circuit
through a PBX.
Is it feasible to connect the output of the sound card to
the Acoustic interface(microphone interface) of the GSM circuit?
Further
can i include an executable script file (containing AT commands to the GSM
modem) in the Asterisk dialplan? Basically i a running two SIP clients. One
SIP client makes a call to another which is running on the Asterisk machine
itself. Asterisk will route call to the SIP user agent which will then make
use of sound card. If i mmeanwhile modify Asterisk dialplan to issue AT
commands to GSM modem. The analog baseband of GSM chipset will take its input
from the sound card and will then make a radio link to the dialed cell
number.
Thanks a lot in advance for
help!!!
Renu Rangnekar
MTech Student
IISc,Bangalore
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