CME GPP-3 Specifications download pdf (Page 22)

3GPP

3GPP TS 27.007 V6.3.0 (2003-

06)

Release 6

22, 25 Not used. If received, shall be treated as if 12 had been received or an ERROR shall be returned.

refer PCCA STD-101 [17] for other values.

Implementation

Mandatory in PCCA STD-101, but optional for GSM/UMTS.

5.10 Informative examples

When beginning to build a communication link, a general TE application controlling a TA needs to determine the TA

and the MT to which it is connected. V.250 [14] has seven commands for TA identification from which four are

mandatory to be implemented in a TA. An example of this command sequence requesting manufacturer (+GMI), model

(+GMM), revision (+GMR) and serial number (+GSN) information would be:

AT+GMI

Manufacturer ABC

AT+GMM

GSM Ultimate Data Device

AT+GMR

1.00

AT+GSN

987612345-123

The maximum lengths of the information responses are defined to be 2048 characters, but it is recommended that they

are kept as simple as in the example. The serial number command is defined as optional. Another optional command is

Global Object Identification command (+GOI) which should return the object identifiers of ITU-T Recommendation

X.208 as numeric strings delimited by periods. The Complete Capabilities List command (+GCAP) should indicate the

major capability areas of the TA. The support of different areas is presented in the response of +GCAP command. Each

area may be presented by the selection command name of a specific capability area (e.g. +FCLASS for fax support) or

some other predefined response. For instance, a GSM TA with fax capabilities could respond as follows:

AT+GCAP

+GCAP: +CGSM,+FCLASS,+W

The first supported area in the response is presented with +CGSM. It is the response text to show that some or all GSM

commands of the present document are supported. Second response text (+FCLASS) informs that some fax or voice

capabilities are present, and the third text (+W) about the presence of wireless commands as specified by PCCA

STD-101 [17]. Command +FCLASS=? (refer e.g. ITU-T T.31 [11] and T.32 [12]) should be used to query the

supported fax capabilities and +WS46=? to query the wireless data services available:

AT+FCLASS=?;+WS46=?

0,1,2,2.0

(12)

The TA of this example supports GSM data services, and fax service class 1 (TIA-578-A), 2 (manufacturer specific)

and 2.0 (ITU-T T.32 [12]/ TIA-592).

The present document defines commands for MT identification which are similar to those for TA identification in

V.250 [14], for an example:

AT+CGMI

Mobile Manufacturer XYZ

AT+CGMM

GSM Phone 1234

AT+CGMR

1.00

AT+CGSN

123456121234561

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