Specifications

AT Command Set Reference
Ver. 1.00
GSM1308AT001 Page 255 Ver. 1.00 – 10/29/2008
4.7.2. $ACKTM Acknowledgment Message Period &
Retry Number (continued)
Parameter Values
<max retry> The maximum number of times an
acknowledge message is re-sent to a single
friend server. After all retries to the friend
server are exhausted, the modem will move
on to the next friend server if one exists. If
there are no more friend servers available,
the modem will start PDP activation
recovery if the recovery option is selected;
otherwise, the message will be discarded.
In the case of the default acknowledge
wakeup message: The maximum number
of wakeup messages the modem will send
to each server friend upon receipt of a new
IP, or upon expiration of each keep-alive
period. Zero indicates no wakeup
message should be sent
<retry period > The number of seconds between
successive message retries. Zero indicates
no retries.
<IP reselect > 0 IP reselection is OFF.
1 If an acknowledge message has not
been received after all friend servers
and retries for the message are
exhausted, assume a problem with
round-trip communication and initiate
IP re-selection.
Reference
Standard Scope Optional
Enfora Implementation Scope Full