smpp, ton and npi problem

I don't know if it is a bug, and I don't even know if it's
specific to SMPP only, but ... ok here is the problem.

I'm using latest kannel-cvs (as of now, with full SMPP debuging), and 
connecting to comverse SMPP smsc. When kannel receives a SMS from the
smsc, I get:

    source_addr_ton: 1 = 0x00000001
    source_addr_npi: 1 = 0x00000001
    source_addr: "38970359xxx"
    dest_addr_ton: 1 = 0x00000001
    dest_addr_npi: 1 = 0x00000001
    destination_addr: "221"

Now when kannel tries to reply to this message (the simplest
default sms-service returns a string only) it tries like this:
    source_addr_ton: 2 = 0x00000002
    source_addr_npi: 1 = 0x00000001
    source_addr: "221"
    dest_addr_ton: 2 = 0x00000002
    dest_addr_npi: 1 = 0x00000001
    destination_addr: "38970359xxx"

which doesn't work (the smsc returns an error). It would be
better if kannel would reply to the message with the same ton and
npi (both source and destination) as in the message received.

Curently I solve this problem by modifying smsc_smpp.c, and
changind default ton and npi values.




Another thing, I don't know if this is Comverse specific, but for
alphanumeric source adresses, Comverse requires TON=5 and NPI=1.
In Kannel it's TON=5 and NPI=0.





-- 
Damjan Georgievski