what version of dahdi did you use? I think the right command is
sebi send sms 1 xxxxx "Text message"
Did you use the dahdi which contain the sebi? You should download from here:
www.odicha.net/downloads/svn/sebi-dev/
Unfortunately that's impossible, GSM GW is installed inside the server room of the bank, only access I have is physical, IT stuff won't let me a VPN access...
BTW call quality is excellent with this card, compared to bank's old GSM gateway
hi:
the problem looks the channel still busy and not released when you send sms. to debug that,
please: modprobe opvxg4xx debug=10 when loading the driver and open error and debug in asterisk logger.conf.