Question about tracking messages (maybe using UDH ?)

[Stephane Rosa]

Hi,   What I’m trying to do is to track messages when they are replied to. The goal is to use Kannel to send alerts to people and let them a chance to acknowledge them (will be used With Nagios for those who know it). How can I put some kind of transaction number in a message sent, so that I can track it back when it is replied to. For example :   Send message “HOST X IS DOWN” to number 123 Send message “HOST Z IS DOWN” to number 456 Guy with number 123 replies “ACK I will take care of it” Guy with number 456 replies “NACK got no time now”   I want to create two sms-services, ACK and NACK and log their answer in the system, but how can I match messages sent with replies ? I could add an alert number to the text, but users would have to retype that number when replying, that’s painful.   Hope I’m clear enough. Thanks for any hint.   Cheers Stephane