For 2-way notifications sent to cell phones, we recommend using the -o sms parameter of the unotify command, the check box Cell Phone Device (SMS) on the Notification Window, Options page, or the SDK function nscli_attr_in_protocol_options. These items embed the unique message identifier in the message text instead of the subject line, where it is located by default. Because of the limited screen space on cell phones, the subject line may be truncated. In addition, a cell phone may not include the subject line in the reply. The Notification Services daemon uses the subject to associate a unique ID with the message, so if the reply does not contain the subject, the daemon will discard the reply.
These options cause a prompt asking the message recipient to include the ID in the reply:
Please include *2387* in reply.
Service xxx is down, call...
Note: IDs are small integers and different daemons could possibly assign the same number to different messages. Therefore, each daemon should monitor a dedicated mailbox to avoid mismatched replies.
