Route incoming SMPP messages to specific SMSC in Kannel/OpenSMPPBox

Question

I have clients connecting to me through SMPP connections (OpenSMPPBox) and then, they are sent with Kannel to SMSCs. I would like to route particular numbers to specific SMSCs, but I am not sure whether it is possible.

If anyone has any experience with this, please let me know,

All best,
Olsi.

Answer 1

I didn't find a way to manage this and ended up using NowSMS, a paid solution.

Answer 2

In order to route MT messages through a specific channel, the following steps are required. Suppose we want all MT messages from ESME internal-esme, which is connected to opensmppbox, to be sent to smsc-id external-smsc in bearerbox.

1. To do this, create the smsc-route group in /etc/kannel/opensmppbox.conf:

group = smsc-route
smsbox-id = internal-esme
smsc-id = external-smsc

2. Now you need to add an allowing rule to smsc-id external-smsc, which will mean: messages that are defined with the smsc_id parameter and which match the specified ones are allowed to be sent. Example in /etc/kannel/kannel.conf:

group = smsc
smsc-id = external-smsc
smsc = smpp
...
allowed-smsc-id="external-smsc"

3. Now it is necessary to deny in the remaining channels smsc_id external-smsc, so add to each remaining channel:

group = smsc
smsc-id = provider1
smsc = smpp
...
denied-smsc-id="external-smsc"

group = smsc
smsc-id = provider2
smsc = smpp
...
denied-smsc-id="external-smsc"

The allowed-smsc-id and denied-smsc-id parameters allow names to be enumerated with ;. Thus, we created rules with explicit routing through a specific smsc-id external-smsc for ESME internal-esme. Do not forget, to determinate MT routing, Kannel selects the appropriate channel for sending (see gw/smscconn.c, smscconn_usable function).