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Programmes After Market Services (P.A.M.S.)
Technical Documentation
NME±2A SeriesTransceivers
Chapter 6
External SIM Card Reader
CAE±2
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Contents
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Page No |
Introduction |
4 |
Summary |
4 |
Modes of Operation |
4 |
Card Out Mode |
4 |
Card In Mode |
5 |
Installation of the CAE±2 |
5 |
Block Description |
6 |
Overview |
6 |
Power Block |
7 |
MBUS Interface |
7 |
SIM Interface |
7 |
MCU Block |
8 |
Hardware Description |
8 |
Signals on Modular Connectors |
8 |
Signals on SIM Connector |
9 |
Power Block |
9 |
MBUS Interface |
9 |
SIM Interface |
10 |
MCU Block |
11 |
Circuit Diagram of GM8S |
12 |
Component Layout Diagram of GM8S |
13 |
Parts List of CAE±2 (EDMS: Issue 4.2) |
14 |
Exploded View of CAE±2 |
16 |
Mechanical Items |
16 |
List of Figures |
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Figure 1: Interconnection Diagram |
6 |
Figure 2: Block Diagram |
7 |
Figure 3: Circuit Diagram of GM8S Module |
12 |
Figure 4: Component Layout Diagram of GM8S |
13 |
Figure 5: Exploded View of CAE±2 |
16 |
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Introduction
Summary
The CAE±2 external SIM card reader is designed for the Nokia 6081 GSM car telephone with type designation NME±2A and the handset with type designation HSE±6XA.
The card reader is designed for a ID±1 SIM card (IC±card) in accordance with GSM recommendation 11.11 and ISO standard ISO±7816±1,2,3. All cards which do not comply to the GSM11.11 and ISO±7816 will be rejected by the CAE±2. Only one card at a time can be used in the external card reader.
The card reader is connected to the telephone via the system cable and an extension cable, through one of its modular connectors. The handset is connected directly to the card reader through the second modular connector. The two modular connectors are connected in parallel, so the handset and the extension cable can be connected to any of the two connectors.
The CAE±2 works in parallel with the internal card reader in the 6081. If a card is inserted in the internal card reader, and there is no card in the external, then the 6081 will function as normal. If a card is inserted in the external card reader, and there is no card in the internal, then the 6081 will work as if a card was inserted in the internal reader. The external reader has the highest priority, so if a SIM card is inserted in both the internal and the external card reader, then the external will handle all the
GSM operations, and the internal SIM card interface will be disabled. If a conversation already was established when a card is inserted in the external card reader, that conversation is interrupted, the internal card reader is disabled, and the telephone will log onto the network using the
SIM card in external reader.
Modes of Operation
The CAE±2 has two modes of operations which is, with or without a SIM card inserted in the card reader.
Card Out Mode
The card reader will be in this mode when no SIM card is inserted, and 12V DC is connected via the modular connector, and this is the case even if the MBUS connection is missing. The LED is iluminated when the reader is in the card out mode.
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The card reader first sends a MBUS registration message (as a slave unit) to the telephone (which is the master). The telephone responds by sending a registration acknowledge message to the card reader. When the acknowledge is received, the reader starts looking for a SIM card. If the MBUS connection is missing it will never start looking for a SIM card, because of the missing registration acknowledge, so the LED will stay on even if a card is inserted in the reader.
Card In Mode
When a SIM card is inserted in the reader, then the LED is turned off, and it enters the card in mode. The card reader will do read and write operations requested either from the telephone or SIM card itself. All SIM operations, which are available from the user interface in the telephone can can be done with a SIM card in the internal card reader, can now be executed using the SIM card in the external card reader. Phone calls can be initiated as soon as the telephone is in service.
If the SIM card is drawn out from the card reader, the SIM interface will be disabled and the CAE±2 will enter the card out mode.
Installation of the CAE±2
The CAE±2 (10 is installed using a extension cable (11) which is plugged into one of the modular connectors on the card reader and into the connector on the system cable (5) normally used for the handset (2). The handset is then connected to the second modular connector on the card reader.
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