Independent RX and TX connections

Hi all,

This is my first posting to this list. I've been using the users@kannel list
a lot during the last months, but it seems that this problem is more
suitable for this list than for users@kannel.

I just moved from 1.2.1 to 1.3.2 yesterday and despite being able to compile
MySQL support (not an issue for me as for today), everything went fine.

I am trying to connect to a carrier that demands a somewhat strange
connection scheme:

1. The carrier has 2 SMSC running on 2 different IP's, let's call them
SMSC-1 and SMSC-2 on 1.1.1.1 and 2.2.2.2.
2. I am supposed to have 2 RX connections running continuosly connected (one
for each SMSC).
3. I am supposed to have at least 1 TX connection. I can have 2 if I want
_but_ (and here comes the funny part):

4. If the TX connection drops (or one of them if I have 2), I am supposed to
bring the other one online inmediatly after noticing it (enquire_link_resp
not received). If I have both TX connections running, I should route all
traffic on the "good" connection.

I've tried many different patches on 1.2.1 and after a week of frustration
and madness with some bugs on that version, I've switched to 1.3.2. It
solved a great deal of my problems, mainly having to do with the retry
connection stuff, but there is one I cannot solve:

* If the TX connection drops, Kannel also drops the RX connection on that
link.

My question is: Is there any way to "independize" the TX/RX links, so Kannel
does not drop the RX when the TX fails? It would be good, since the
enquire_link/_resp stuff is already being sent and received in both
directions.

Is there any patch or workaround to make Kannel work with this kind of
situation?

I'm thinking if I set up different SMSC groups for TX and RX, but there is
no way I can set an TX-Only connection isn´t it? When I put port=1234 and
receive-port=0 both get asigned to 1234. I've tried setting receive-port to
an arbitrary value (9999) and the TX link goes up, but after a few
unsuccessful retries on the 9999 both TX and RX get disconnected.

Thank you in advance,