Quick SMSCB HOWTO¶

Assumptions:

• osmo-bsc, osmo-cbc and cbc-apitool.py installed on the same host
  • cbc-apitool.py is hidden in the osmo-cbc-utils dpkg/rpm package.

In order to test SMSCB, you will need to:

1. configure your BTS channels to include a CBCH (either on SDCCH/4 or on SDCCH/8)
   

   bts 0
     trx 0
      timeslot 0
       phys_chan_config CCCH+SDCCH4+CBCH
   

2. configure CBSP on the BSC, for example like this:
   

   cbc
    mode client
    client
     remote-ip 127.0.0.1
     local-ip 127.0.0.1
     local-port 46133
   

3. configure OsmoCBC from the osmo-cbc RPM package, for example like this:
   

   cbc
    unknown-peers reject
    peer local-bsc
     protocol cbsp
     remote-port 46133
     remote-ip 127.0.0.1
    cbsp
     local-ip 127.0.0.1
     local-port 48049
    ecbe
     local-ip 127.0.0.1
     local-port 12345
   

4. use cbc-apitool.py from the osmo-cbc-utils RPM package to add a new SMSCB to the system
   

   $ cbc-apitool.py create-cbs --msg-id 4370 --payload-data-utf8 "Bon giorno!" 
   

At that point you should see

• CBSP WRITE-REPLACE messages on tcp port 48049 between CBC and BSC over the loopback device
• RSL SMS BROADCAST COMMAND on Abis RSL (tcp port 3003) between BSC and BTS; periodically repeated
• CBCH downlink transmissions on Um towards the MS

If your phone doesn't disable them, with a msg-id of 4370 you should get a "Presidential Level Alert' for 4370.

For more message IDs, see TS 23.041 section 9.4.1.2.2