> 0 | Document History

> This chapter reports modifications and improvements over previous versions of this document.
> Preceding document: “Multiplexer User's Guide”, Version 10
> New document: “Multiplexer User's Guide”, Version 11

> Chapter | What is new
> --- | Renamed file name to WM01_Mux_Guide_vxx.pdf
> 1.1 | Added further supported products.
> 2.1 | Corrected Figure 1.

> Preceding document: “Multiplexer User's Guide”, Version 09
> New document: “Multiplexer User's Guide”, Version 10

> Chapter | What is new
> Throughout document | Added Windows Vista.
> 1.1 | Updated list of products capable of multiplexer protocol version 4.
> 4.3.9 | Added note that in case of premature end of data connection (e.g. due to network loss) modem status and control signals may be transmitted prior to the data stream.
> 5.5.5 | Figure 17: Corrected acknowledge state variables on station 1 side and receive state variables on station 2 side. Figure 18: Corrected windows size (= 7).
> 5.5.5 | Corrected trace example, section "#Host replies to the test signal": Added heading 0xF9.

> Preceding document: “Multiplexer User's Guide”, Version 08
> New document: “Multiplexer User's Guide”, Version 09

> Chapter | What is new
> Throughout document | Added further supported products. Added Siemens multiplexer protocol V4.
> 1.3 | Updated list of standards.
> 3.1.1 | Added note on interfaces used for Multiplexer mode. Added UIH_E framing.
> 3.1.2 | Frame size N1 adjustable from Siemens multiplexer protocol V4 onwards.
> 3.2.1 | Changed description of flow control on logical channels and on the physical interface. Added note on handling of FC bit from Siemens multiplexer protocol V4 onwards.
> 5.4.1 | Corrected description of troubleshooting.
> 5.5 | New chapter: Siemens Multiplexer Protocol Version 4.

> Preceding document: “Multiplexer User's Guide”, Version 07
> New document: “Multiplexer User's Guide”, Version 08

> Chapter | What is new
> 1.1 | Added AC75.
> 2.1 | Revised chapter.
> 3.1.3 | Added product specific remark on unframed data on closed virtual channels.
> 3.1.4 | Removed Remark on URCs.
> 4.3.10 | Added coding of PSC message for SLEEP mode AT+CFUN=9.

> Preceding document: “Multiplexer User's Guide”, Version 06
> New document: “Multiplexer User's Guide”, Version 07

> Chapter | What is new
> 1.1 | Added further supported products.
> 3.1.1 | RTS/CTS not relevant on USB. Remark on periodic output of parameters.
> 3.1.4 | Modified remark on AT&W.
> 3.1.6, 3.1.6.1 | New chapters Relationship between Multiplex Channels and Non-multiplexed Physical Interfaces and First Serial Interface ASC0.
> 3.1.6.3 | New chapter: Operation of the USB Interface (if Applicable).
> 3.3 | More detailed info on supported CFUN levels.
> 3.2.1 | RTS/CTS not relevant on USB.
> 5.1 | Added note on Multiplexer protocol version for MC75, TC63, TC65.

> Preceding document: “Multiplexer User's Guide”, Version 05
> New document: “Multiplexer User's Guide”, Version 06

> Chapter | What is new
> 1.1 | Added further supported products.
> 3.1.1 | Added note about closing Multiplexer.
> 3.1.2 | Added note about maximum frame size N1.
> 4.2.5 | Second byte for frame size greater than 127 bytes is not supported.
> 4.3.5 | Corrected description of Close-down procedure.
> 5 | Corrected description of multiplexer version control.
> 5.1 | Corrected example.

> Preceding document: “Multiplexer User's Guide”, Version 04
> New document: “Multiplexer User's Guide”, Version 05

> Chapter | What is new
> 1.1 | Added further supported products.
> 3.1.4 | Modified remark on AT&W.
> 3.1.6.2 | Added chapter Operation of a Second Physical Serial Interface ASC1 (if Applicable).

> Preceding document: “Multiplexer User's Guide”, Version 03
> New document: “Multiplexer User's Guide”, Version 04

> Chapter | What is new
> 1.1 | Added further supported products.
> 3 ‑ 3.4 | Restructured and revised all chapters.
> 3.1.2, 3.3, 4.3.10 | To control SLEEP mode use PSC messages rather than entering AT+CFUN=<n>