Matrix SIMADO GFXD1111S, System Manual

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76 Matrix SIMADO GFXD1111S V3 System Manual
International Mobile Equipment Identity (IMEI)
Just like mobile handsets, each GSM module has an IMEI (International Mobile Equipment Identity) number printed
on its GSM engine. International Mobile equipment Identity number is a unique 15 or 17 digit code used to identify
an individual GSM module to a GSM network. When GFXD1111S is switched on, the IMEI code is transmitted and
is verified in the network database called Equipment Identity Register (EIR).
EIR consists of three lists: White list, Grey list and Black list.
• White list consists of equipment identities that are fully permitted to access and use the network.
• Black list contains all the equipment identities that are barred from using the network.
• Grey list contains those equipment identities that are not barred form using the network services but are
tracked by the network for evaluation purpose.
Network will allow the GSM module to access the GSM network only if the IMEI code is registered in the white list
of EIR. This number is useful in case SIMADO GFXD1111S is lost or stolen. When the GFXD1111S is lost or stolen,
the network operator can block IMEI number of the GSM module installed in the system. Thus the important
information stored in the GFXD1111S can be protected from being misused.
Currently used Structure of IMEI number is as follow:
AA-BBBBBB-CCCCCC-D
Where,
AA is Reporting Body Identifier, indicating the GSMA approved group that allocated the Type Allocation Code
(TAC).
BBBBBB is the remainder of the TAC.
CCCCCC is serial sequence of the Model.
D is Luhn check digit of the entire model or 0. (This is an algorithm that validates the ID number)
• In CDMA module, there is an Electronic Serial Number viz. ESN, which is similar to the IMEI number of
GSM module. ESN number is 8 digit code and its structure is different from that of IMEI number.
• IMEI/ESN can be displayed on the SLT irrespective of the CLI type (DTMF/ V.23 FSK/ FSK Bellcore)
programmed on the FXS port.
How to Check IMEI/ESN code?
Use following command to check IMEI/ESN code of the GSM/CDMA module:
#*-13
Relevant Topics:
1.
“Port Parameters-FXS” 116
2.
“Port Parameters-Mobile” 121