SMPP Server using telnet GSM modem

Hi,

I'm not at all sure this is possible but thought I'd lay the idea out in 
full and see what you think, apologies for all the links! (I'm hoping 
they illustrate things better than I can)

 From what I gather SMPP is the closest standard protocol you can get 
for sending/receiving SMS over a TCP/IP based network.  I currently have 
one of these units...

http://portech.com.tw/p3-product1_1.asp?Pid=14

Which is normally used as a SIP based GSM gateway, now although very 
handy in itself the newest firmware supports the sending and receiving 
of SMS namely because it contains two of these modules...

http://www.rfsolutions.co.uk/acatalog/tc35i_atc_v0301.pdf

That document contains all the AT commands, commands that from what I've 
seen of other make/models of GSM modules are generally very similar at 
least in regards to SMS.

It's very simple the send an SMS over telnet using the example in the 
user guide on PDF page 36.

http://portech.com.tw/data/MV-372%20user%20manual.pdf

Would it be possible (or how much work might be needed) to get Kannel to 
communicate with this device (which are proving more and more popular as 
people adopt things like Asterisk and Freeswitch) over telnet to send 
and receive SMS messages?

And can anyone recommend a free or open source (cross platform and/or 
web based) SMPP client that I could then use to instruct Kannel to send 
and receive these messages?

Essentially use Kannel as my SMPP server with an SMPP client or WebSMS 
program... just as I have an SMTP server with an E-mail client or WebMail.

I could just write a PHP based web interface to interact with it on 
telnet directly, but if SMPP is the standards way to go... I'd rather do 
that.

--
Steven Maddox
Software Engineer

Function Office
www.functionoffice.org