1、 TIA-678-B-2011 APPROVED: AUGUST 9, 2011 REAFFIRMED: OCTOBER 27, 2014 TIA-678-B (Revision of TIA-678-A) August 2011Data Transmission Systems and Equipment Serial Asynchronous Automatic Dialing and Control for Character Mode DCE on Wireless Data Services NOTICE TIA Engineering Standards and Publicati
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20、AND THESE CONTENTS WOULD NOT BE PUBLISHED BY TIA WITHOUT SUCH LIMITATIONS. TIA-678-B FOREWORD (This Foreword is not part of the Standard) This Standard is based on the work of the Portable Computer and Communications Association, PCCA STD-101, including the provisionally approved Annex F and Annex I
21、. Annexes F and I are renumbered Annexes B and C respectively. Most of 5.2/STD-101, which is redundant with TIA/EIA-602-A or ITU-T V.250, has been removed. This Standard includes a new Annex D which defines PAD Control commands for Wireless DCE used in Packet Data Networks. The commands were added a
22、s Annex D in the Table of Contents, and are defined in the body of the Annex, which has been added to this revision. Appendix I has been modified to include summaries of the commands, and the Scope has been modified. Revision A of the Standard incorporates changes detailed in TIA/EIA-678-1 Addendum
23、1 to TIA/EIA-678. In addition, the references to ITU-T V.25ter have been replaced with references to ITU-T V.250. References to other standards have also been updated or replaced with the applicable reference. Revision B of the Standard changed all references to TIA/EIA-602-A to reference appropriat
24、e sections of ITU-T V.250. Many of the referenced sections of TIA/EIA-602-A no longer exist. TIA-678-B TIA-678-B i Data Transmission Systems and Equipment - Serial Asynchronous Automatic Dialing and Control for Character Mode DCE on Wireless Data Services Contents 1. SCOPE . 1 2. NORMATIVE REFERENCE
25、S 2 3. INFORMATIVE DEFINITIONS . 3 3.1. INTENDED AUDIENCE . 3 3.2. STYLE CONVENTIONS. 3 3.3. INTRODUCTORY DEFINITIONS 3 3.4. REFERENCE MODEL . 5 3.5. PROTOCOL DEFINITIONS 6 3.5.1. End-to-End Protocol 6 3.5.2. Command State Protocol 9 3.5.3. Additional Information . 10 3.6. DCE FUNCTIONAL BLOCK DIAGR
26、AM . 10 3.7. DCE OPERATING STATES 13 3.8. ADDITIONAL DEFINITIONS . 14 4. DTE-DCE LINK (NORMATIVE) . 15 4.1. Low-Level Logical DTE-DCE Interface . 15 4.2. Physical DTE-DCE Interface . 16 5. COMMAND STATE OPERATION (NORMATIVE) 17 5.1. COMMAND STRUCTURE 17 5.2. FUNCTIONS . 19 5.2.1. ITU-T Function Comm
27、ands . 19 5.2.2. ACE/DTE Interface Parameters 25 5.2.3. ACE Parameters . 25 5.2.4. Wireless DCE Extended Commands and Parameters 26 5.3. RESULT CODES . 32 5.4. PARAMETER AND COMMAND SCOPE RULES 35 5.4.1. Scope, Visibility, and Volatility Restrictions . 35 5.4.2. Parameter Value Conflict Procedures .
28、 35 6. DATA STATE OPERATION (NORMATIVE) . 38 6.1. +WS45 AND +WS46 IN ON-LINE DATA STATE 38 6.2. REQUIREMENTS FOR CHARACTER STREAM OPERATION . 39 6.3. TRANSPARENT CHARACTER STREAM 39 6.4. RELIABLE TRANSPARENT CHARACTER STREAM . 40 TIA-678-B ii ANNEX A (NORMATIVE) - BUILDING ON THIS STANDARD . 41 A.1.
29、 EXTENSIBILITY FRAMEWORK 41 A.2. COMMAND SET EXTENSIONS 43 A.2.1. Commands in Proposed Annexes 43 A.2.2. Manufacturer-Specific Commands . 43 A.3. RECOMMENDED ANNEX CONTENTS 44 ANNEX B (INFORMATIVE) - MISCELLANEOUS COMMANDS 45 B.1 SCOPE 45 B.2 NOTES ON INTERRELATED COMMANDS . 45 B.3 MISCELLANEOUS COM
30、MANDS 45 B.3.1 Miscellaneous Parameter Commands 45 B.3.2 Miscellaneous Action Commands 49 B.4 ADDITIONS TO +W COMMAND 52 ANNEX C (INFORMATIVE) - COMMAND EXTENSIONS FOR ANALOG CELLULAR DATA MODEMS 53 C.1 SCOPE 53 C.2 INVOCATION 53 C.3 CONFIGURATION 53 C.4 ANALOG CELLULAR RESULT CODES . 54 C.5 ANALOG
31、CELLULAR DATA MODE COMMANDS 54 C.5.1 Data over Analog Cellular Commands Query . 54 C.5.2 Call Session Time Limit . 55 C.5.3 Enable Cellular Result Codes 55 C.5.4 Roam Lockout . 56 C.5.5 Phone Specification . 57 C.5.6 Bias Modem Audio Gain 57 C.5.7 Keypad Emulation . 58 C.5.8 Phone Number Directory S
32、election . 61 C.5.9 Phone Battery Query . 61 ANNEX D (INFORMATIVE) - COMMAND EXTENSIONS FOR PAD CONTROL IN PACKET NETWORKS . 63 D.1 SCOPE 63 D.2 PAD CONTROL PARAMETER COMMANDS 63 D.2.1. Time-Independent Escape Sequence Enable . 63 D.2.2. Disconnect Procedure . 63 D.2.3. Local Online Echo Enable . 64
33、 D.2.4. Forwarding Character Feature Mask . 64 D.2.5. PAD Primary Forwarding Character 65 D.2.6. PAD Secondary Forwarding Character . 66 D.2.7. Packet Termination Upon Entering Online Command State . 66 D.2.8. No Data Disconnect . 67 D.2.9. Data Disconnect 67 D.2.10. PAD Break Handling 68 TIA-678-B
34、iii D.2.11. PAD Inter-Character Timer 68 D.2.12. PAD Inter-Line Timer . 69 D.2.13. PAD Input Buffer Editing Enable . 69 D.2.14. PAD Input Buffer Backspace Character 70 D.2.15. PAD Maximum Packet Length 71 D.2.16. Display Memory Usage . 71 D.2.17. Flush WAN-bound Data Buffer 72 D.2.18. Display Suppor
35、ted Annex D Commands . 72 D.3 ADDITIONS TO +W COMMAND 72 APPENDIX A (INFORMATIVE) - COMMAND SET SUMMARY . 74 TIA-678-B iv TIA-678-B 1 1. SCOPE This standard is applicable to the interconnection of data terminal equipment (DTE) and data circuit-terminating equipment (DCE) employing serial binary data
36、 operation via the 100-series interchange circuits or data operation over equivalent logical circuits. This standard specifies extensions to the protocol elements, procedures, and behaviors described in ITU-T V.250. These extensions are based on the “+” command prefix and adhere to the extended comm
37、and syntax conventions established by ITU-T V.250. This standard generalizes the protocol elements, procedures, and behaviors described in ITU-T V.250, making them applicable to DCE which operate over arbitrary data networks. This standard defines the commands that the DTE may issue to: (1) Interrog
38、ate the capabilities of the DCE, including determination of what data network types and associated network-specific AT command set extensions are supported by the DCE; (2) Select among supported data network types for subsequent DCE processing of automatic calling and automatic call answering functi
39、ons; and, (3) Select among supported DTE-DCE interface protocols. This standard defines the responses the DCE shall issue to those commands. Where possible, these commands and responses are taken from existing TIA standards. This standard establishes required mappings between manufacturer-specific d
40、ata network services and the DCE protocol elements, procedures, and behaviors referenced in ITU-T V.250 (e.g. ring, dial, answer, busy, on-line data state). This standard establishes conventions for interworking of network-specific AT command sets in DCE which support multiple data network types. Th
41、is standard establishes a minimal DCE Common AT Command Set consisting of: (1) Those commands defined in ITU-T V.250, and (2) Required extensions using the +W command prefix in accordance with ITU-T V.250. This standard establishes conventions for uniform extension of its own scope and content throu
42、gh Annexes. Annex D defines optional extensions to the protocol elements, procedures and behaviors defined in the original standard, based on +WS and +WC command prefixes reserved for standardized extensions. The parameters in Annex D only affect operation of the DCE in Transparent Character Stream
43、mode and in Reliable Transparent Character Stream mode, as selected by +WS45=0 or by +WS45=1. TIA-678-B 2 2. NORMATIVE REFERENCES The following standards and other publications contain provisions or normative references which, through reference in this text, constitute provisions of this standard. A
44、t the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Each publishing standards body ma
45、intains a register of currently valid national, international, and industry standards published by them. TIA-232-F-2000, Interface Between Data Terminal Equipment and Data Circuit-Terminating Equipment Employing Serial Binary Data Interchange. TIA-561-2003, Simple 8 Position Non-Synchronous Interfac
46、e Between Data Terminal Equipment and Data Circuit-Terminating Equipment Employing Serial Binary Data Interchange. TIA-574-2003, Simple 9 Position Non-Synchronous Interface Between Data Terminal Equipment and Data Circuit-Terminating Equipment Employing Serial Binary Data Interchange. TIA/EIA-578-B-
47、2000, Asynchronous Facsimile DCE Control Standard, Service Class 1. TIA/EIA-592-A-1998, Asynchronous Facsimile DCE Control Standard, Service Class 2. TIA/IS-707-A-1998, Data Services Options for Wideband Spread Spectrum Systems. TIA-136, TDMA Third Generation Wireless Standards ITU-T V.24-2000, List
48、 of Definitions for Interchange Circuits Between Data Terminal Equipment (DTE) and Data Circuit Terminating Equipment (DCE) ITU-T V.250-2003, Serial Asynchronous Automatic Dialing and Control ITU-T V.253-1998, Control of voice-related functions in a DCE by an Asynchronous DTE ITU-T V.80-1996, In-ban
49、d DCE control and synchronous data modes for asynchronous DTE ITU-T T.31-1995, Asynchronous Facsimile DCE Control, Service Class 1 ITU-T T.32-1995, Asynchronous Facsimile DCE Control, Service Class 2 TIA-678-B 3 3. INFORMATIVE DEFINITIONS The following definitions apply for the purpose of interpreting this standard. In the event of conflicting definitions for the same term in this standard and the Normative References, the definitions given in this standard apply (for purposes of this standard only). This standard groups informative definitions as follows: - Intended Audience -
