Siemens AC45 Manuals

Manuals and User Guides for Siemens AC45. We have 1 Siemens AC45 manual available for free PDF download: User Manual

Siemens AC45 User Manual (36 pages)

Multiplexer User's Guide

Brand: Siemens | Category: Cell Phone Accessories | Size: 1.1 MB

Table Of Contents3................................................................................................................................................................

Document History5................................................................................................................................................................

Introduction6................................................................................................................................................................

Supported Products And Related Documents7................................................................................................................................................................

References7................................................................................................................................................................

Term And Abbreviations8................................................................................................................................................................

Multiplexer Protocol - An Overview9................................................................................................................................................................

Product Concept And Architecture9................................................................................................................................................................

Figure 1: Multiplexer Architecture9................................................................................................................................................................

Virtual Channels And At Commands10................................................................................................................................................................

Table 1: Comparison Of Multiplexer Channels10................................................................................................................................................................

Integrating Multiplexer Into The Customer Application11................................................................................................................................................................

Characteristics11................................................................................................................................................................

Basic Requirements11................................................................................................................................................................

Restrictions11................................................................................................................................................................

Dependencies Between Multiplexer Channels And Restrictions Of Use12................................................................................................................................................................

Functions Without Channel Dependencies12................................................................................................................................................................

Timing Conditions13................................................................................................................................................................

Operation Of A Second Physical Serial Interface Asc1 (if Applicable)13................................................................................................................................................................

Multiplexer Control And Signaling Lines14................................................................................................................................................................

Flow Control14................................................................................................................................................................

Figure 2: Logical Flow Control And Rts/cts Signaling Behind The Decoder15................................................................................................................................................................

Escape Sequence16................................................................................................................................................................

Power Saving16................................................................................................................................................................

Bandwidth Of Logical Channels16................................................................................................................................................................

Structure Of The Multiplexer Protocol17................................................................................................................................................................

Introduction Of The Multiplexer Protocol17................................................................................................................................................................

Data Link Layer17................................................................................................................................................................

Figure 3: Data Link Layer17................................................................................................................................................................

Flag Sequence18................................................................................................................................................................

Address Field18................................................................................................................................................................

Table 2: Address Field18................................................................................................................................................................

Table 3: Assignment Of The Dlci18................................................................................................................................................................

Table 4: Use Of The Command/response Bit18................................................................................................................................................................

Control Field19................................................................................................................................................................

Table 5: Coding Of The Control Field19................................................................................................................................................................

Length Indicator20................................................................................................................................................................

Information Field20................................................................................................................................................................

Frame Checking Sequence Field (fcs)20................................................................................................................................................................

State Diagrams21................................................................................................................................................................

Figure 4: Relationship Between The Customer µc And The Gsm Engine µc22................................................................................................................................................................

Figure 5: Mpi - Startup, Dlc Establishment And Information Transfer23................................................................................................................................................................

Figure 6: Mp - Dlc Release And Close Down24................................................................................................................................................................

Start-up Procedure25................................................................................................................................................................

Dlc Establishment25................................................................................................................................................................

Information Transfer25................................................................................................................................................................

Figure 7: Dlc Establishment25................................................................................................................................................................

Figure 8: Information Transfer25................................................................................................................................................................

Dlc Release26................................................................................................................................................................

Close-down Procedure26................................................................................................................................................................

Multiplexer Control Channel26................................................................................................................................................................

Figure 9: Dlc Release26................................................................................................................................................................

Figure 10: Multiplexer Control Channel26................................................................................................................................................................

Multiplexer Close Down (cld)27................................................................................................................................................................

Test Command (test)27................................................................................................................................................................

Modem Status Command (msc)28................................................................................................................................................................

Figure 11: Modem Status Command (msc)28................................................................................................................................................................

Power Saving Control (psc)30................................................................................................................................................................

Figure 12: Power Saving Control (psc)30................................................................................................................................................................

Non-supported Command Response (nsc)31................................................................................................................................................................

Example: Establishing Logical Channels Without Parameter Negotiation32................................................................................................................................................................

Figure 13: Establishing The Multiplexer Control Channel And The Logical Channel32................................................................................................................................................................

Multiplexer Protocol Version Control33................................................................................................................................................................

Multiplexer Protocol Versions34................................................................................................................................................................

Figure 14: Msc As Used In Version 334................................................................................................................................................................

Table 6: Version Differences For Msc34................................................................................................................................................................

Implementing Version Control35................................................................................................................................................................

Troubleshooting35................................................................................................................................................................

Coding Of "testcommand" Message36................................................................................................................................................................

Example Of "testcommand" Message36................................................................................................................................................................

Table 7: Iei Coding36................................................................................................................................................................

Table 8: Coding Of "testcommand" (example)36................................................................................................................................................................