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Enfora Enabler IIIG M2M
Modem Integration Guide
6.7. Subscriber Identity Module (SIM) Carrier (Pins 76, 78, 80, 82, 84)
The SIM, an integral part of any GSM terminal device, is a “smart card” that is programmed with
subscriber information:
•
The user information consists of an International Mobile Subscriber Identity (IMSI) number,
which is registered with the GSM provider, and an encryption Ki (pronounced "key"). This
information consists of a microprocessor and memory installed on a plastic card.
Note:
The SIM is not provided with the Enfora Enabler IIIG module. The SIM must be obtained
from the GSM service provider and must be provisioned by the operator for data and/or voice.
Always take care to protect the SIM: the GSM terminal will not operate without the SIM installed.
The SIM provides the IMSI for authentication. To gain access to the GSM network, the network must
recognize the IMSI number, and the terminal must be able to properly decrypt the data sent by the
network. The SIM also serves as a buffer for SMS messages, storing the message for transmission
until a radio link is available and buffering received messages until retrieved.
6.7.1. SIM Integration for the Enfora Enabler IIIG Module
The Enabler IIIG module default configuration does not include an on-board SIM carrier. Enfora
provides a separate product SKU for the Enabler IIIG module with the integrated SIM carrier.
6.7.2. Using a Remote SIM with the Enfora Enabler IIIG Module (Pins 76, 78, 80, 82, 84)
The Enabler IIIG module default configuration does not include an on-board SIM carrier.
The module supports the use of 1.8 V and 3 V SIM cards. The module includes a hardware
interface module dedicated to Universal Subscriber Identity Module (USIM). All baud-rates
defined in ISO 7816-3 standard are supported for high-speed transmission.
The module optionally includes an on-board SIM carrier. All other modules require a remote SIM
carrier/connector. If the module is going to be integrated using a remote SIM, the following
guidelines are provided:
•
To utilize a remote SIM, the integrator must provide a suitable SIM connector.
•
The maximum distance from the module to the remote SIM connector must not exceed
25.4 cm (10 inches).
•
It is recommended to have Zero resistance between the SIM connector and the module.
•
External ESD Protection is Required;
15 kV Air Discharge;
8 kV Contact Discharge;
The transorb must have a low junction capacitance (typically < 10 pf) such as the following part:
Enfora PN: TRS-0000-5009
Manufacturer: On Semi
Manufacturer PN: NSQA6V8AW5T2G
GSM0308IG002
55
Version 1.05 – 11/13/08
