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Siemens Mux_guide_v06 - User Manual
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User’s Guide
Multiplexer User's Guide
Siemens Cellular Engines
Version: 06
DocID: Mux_guide_v06
2
Table of Contents
Main Page
Default Chapter
3
Table of Contents
3
Document History
5
1 Introduction
6
Supported Products and Related Documents
7
References
7
Term and Abbreviations
8
2 Multiplexer Protocol - an Overview
9
Product Concept and Architecture
9
Figure 1: Multiplexer Architecture
9
Virtual Channels and at Commands
10
Table 1: Comparison of Multiplexer Channels
10
3 Integrating Multiplexer into the Customer Application
11
Characteristics
11
Basic Requirements
11
Restrictions
11
Dependencies between Multiplexer Channels and Restrictions of Use
12
Functions Without Channel Dependencies
12
Timing Conditions
13
Operation of a Second Physical Serial Interface ASC1 (if Applicable)
13
Multiplexer Control and Signaling Lines
14
Flow Control
14
Figure 2: Logical Flow Control and RTS/CTS Signaling Behind the Decoder
15
Escape Sequence
16
Power Saving
16
Bandwidth of Logical Channels
16
4 Structure of the Multiplexer Protocol
17
Introduction of the Multiplexer Protocol
17
Data Link Layer
17
Figure 3: Data Link Layer
17
Address Field
18
Flag Sequence
18
Table 2: Address Field
18
Table 3: Assignment of the DLCI
18
Table 4: Use of the Command/Response Bit
18
Control Field
19
Table 5: Coding of the Control Field
19
Frame Checking Sequence Field (FCS)
20
Information Field
20
Length Indicator
20
State Diagrams
21
Figure 4: Relationship between the Customer ΜC and the GSM Engine ΜC
22
Figure 5: MPI - Startup, DLC Establishment and Information Transfer
23
Figure 6: MP - DLC Release and Close down
24
DLC Establishment
25
Figure 7: DLC Establishment
25
Figure 8: Information Transfer
25
Information Transfer
25
Start-Up Procedure
25
Close-Down Procedure
26
DLC Release
26
Figure 10: Multiplexer Control Channel
26
Figure 9: DLC Release
26
Multiplexer Control Channel
26
Multiplexer Close down (CLD)
27
Test Command (Test)
27
Figure 11: Modem Status Command (MSC)
28
Modem Status Command (MSC)
28
Figure 12: Power Saving Control (PSC)
30
Power Saving Control (PSC)
30
Non-Supported Command Response (NSC)
31
Example: Establishing Logical Channels Without Parameter Negotiation
32
Figure 13: Establishing the Multiplexer Control Channel and the Logical Channel
32
5 Multiplexer Protocol Version Control
33
Introduction
33
Multiplexer Protocol Versions
34
Figure 14: MSC as Used in Version 3
34
Table 6: Version Differences for MSC
34
Implementing Version Control
35
Troubleshooting
35
Coding of "Testcommand" Message
36
Example of "Testcommand" Message
36
Table 7: IEI Coding
36
Table 8: Coding of "Testcommand" (Example)
36
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Siemens Mux_guide_v06 Specifications
General
Brand
Siemens
Model
Mux_guide_v06
Category
Cell Phone Accessories
Language
English
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