At command: At + CPMS Introduction

This is an excerpt from the Siemens at command set:

At + CPMS preferred SMS message storage

Revision according to GSM 07.05 version 4.7.0

Test command

At + CPMS =?

Response

+ CPMS: (list of supported <mem1> S), (list of supported <MEM2> S), (list
+

Supported <mem3> S)

Parameter

<Mem1>

Memory from which messages are read and deleted

Sm sim message storage

Me Mobile Equipment message storage

Mt combination of "me" and "SM" storages

<MEM2> messages will be written and sent to this memory storage:

Sm sim message storage

Me Mobile Equipment message storage

Mt combination of "me" and "SM" storages

<Mem3> memory in which received messages are preferred to be stored, if

Routing to te is not set (see at + cnmi command with Parameter

<Mt> = 2)

Sm sim message storage

Me Mobile Equipment message storage

Mt combination of "me" and "SM" storages

READ command

At + CPMS?

Response

+ CPMS:

<Mem1>, <used1>, <total1>, <MEM2>, <used2>, <total2>, <mem3>, <used3>, <total3

>

Parameter

<Memx>

Memory from which messages are read and deleted

<Usedx> Number of messages currently in <memx>

<Totalx> total number of messages that can be stored in <memx>

Write command

At + CPMS = <mem1> [, <MEM2> [, <mem3>]

Parameter

<Mem1>

See test command

<MEM2> see test command

<Mem3> see test command

+ CPMS: <used1>, <total1>, <used2>, <total2>, <used3>, <total3>

OK/error/+ CMS Error

Notes 1) the Mobil Equipment storage "me" has capacity for 25 Short Messages

2) the storage "MT" is a combination of "me" and "SM" storage. If "MT" is

Chosen indices <26 refer to me "storage while indices 26 or higher are

Associated with the "SM" Storage

3) Incoming short messages with message Class 2 (see GSM 03.38) will be

Stored in the "SM" storage only. Therefore, the at ^ smgo: 2 indication (see

At ^ smgo command) can occur without a preceding at ^ smgo: 1 indication.

Concepts:

Mem1: memory space for reading and deleting text messages.

MEM2: memory space for writing and sending SMS messages.

Mem3: storage location of received SMS messages.

Usage:

1. Statement:

At + CPMS =?

Purpose:

Test command. Used to obtain a list of storage locations supported by the mobile phone. On my Siemens M55 mobile phone:

At + CPMS =?

+ CPMS: ("MT", "SM", "me"), ("MT", "SM", "me"), ("MT", "SM ", "Me ")

Indicates that the mobile phone supports MT (mobile phone terminal), Sm (SIM card), and me (mobile phone device)

2. Statement:

At + CPMS = "MT", "me", "SIM"

Set mem1 to Mt, MEM2 to me, And mem3 to Sim

3. Statement:

At + CPMS?

Purpose:

Get the current settings.

For example, after setting the second statement, return:

At + CPMS?

+ CPMS: "MT", 7,150, "me", 7,100, "SM ",

It indicates that there are 7 messages in the MT, and 150 messages can be stored in total. There are 7 in me, and 150 in total can be stored. 50 SIM cards can be stored.