Swarm M138 - Page 73

The HD and ET parameters are optional but must occur before the <data> portion of the
command. Both affect the time when a message is expired and is no longer considered
available to transmit. Expired messages are removed from the outgoing packet database. If
neither option is present, the default hold time of 172800 seconds (48 hours) will be used. If
both options are specified, the <hold_dur> will be ignored. Expired messages will only be
removed from the outgoing database after a Swarm Modem communicates with a Satellite.
<appID> is the application ID tag for the message. If this option is not specified the message
will be sent with application ID 0.
Application ID Value
Description
0 to 65535
The application ID tag for the message. Swarm reserves the
use of application IDs 65000 to 65535.
Any other value
An error message ($TD ERR,BADAPPID*52) is returned.
<hold_dur> is the number of seconds to hold the message if it has not been sent before
expiring it from the database.
Hold Duration Value
Description
60 to 31536000
(one year)
The message will be considered expired if not sent within the
specified number of seconds. The maximum duration is one
year from the current time.
Any other value
An error message ($TD ERR,BADEXPIRETIME*18) is
returned.
<expire_time> is an epoch second date after which the message will be expired if it has not
been sent.
Expiration Time Value
Description
Any other value
An error message ($TD ERR,BADEXPIRETIME*18) is
returned.
November 2021 Swarm M138 Modem Manual - Rev 1.00 73/77