Multitech MTCMR-H User's Guide download pdf (Page 32)

Chapter 2 – Modem-Specific Commands

High Speed HSPA-H4 AT Commands Reference Guide (Document S000483A) 32

!SMSRETRY Set/Return SMS Retry Period and Interval

Syntax: Execution: AT!SMSRETRY=<period>, <interval>

Response: OK

Purpose: Set the retry period and retry interval

Query: AT!SMSRETRY?

Response: !SMSRETRY:

Purpose: Return the current <period> and <interval> settings.

Query List: AT!SMSRETRY=?

Purpose: Display the execution command format.

Description: Configure the SMS retry period and interval for MO-SMS.

Parameters: <period> (Number of seconds allowed for MO-SMS retry attempts):

Valid range: 0–255

<interval> (Number of seconds to wait between MO-SMS retry attempts):

Valid range: 0–255

Notes: If <interval> is greater than <period>, a single retry attempt is made.

<interval> ignores the time spent actually performing a retry attempt.

If <interval> = 5, attempts are made at elapsedTime = 0, 5, 10, etc. until an

attempt is successful or <period> - elapsedTime < <interval>.

Example 1: Assume a retry attempt takes 2 seconds.

If <period> = 1 and <interval> = 8, and no attempts are successful:

Time = 0: Retry attempt fails at time = 2. No more attempts are made

because <period> has expired.

Example 2: Assume a retry attempt takes 2 seconds.

If <period> = 3 and <interval> = 5, and no attempts are successful:

Time = 0: Retry attempt fails at time = 2. No more attempts are made

because <period> will expire before the <interval> passes.

Example 3: Assume a retry attempt takes 2 seconds.

If <period> = 14 and <interval> = 5, and no attempts are successful:

Time = 0: Retry attempt fails at time = 2; next attempt will begin at time=5

(the <interval> counts from the beginning of the previous attempt)

Time = 5: Retry attempt fails at time = 7; next attempt will begin at time=10

Time = 10: retry attempt fails at time = 12; No more attempts will be made

because the <period> will expire before another <interval> of 5 seconds can

pass.

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Multitech MTCMR-H User's Guide Page 32