1、 International Telecommunication Union ITU-T H.248.23TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (03/2013) SERIES H: AUDIOVISUAL AND MULTIMEDIA SYSTEMSInfrastructure of audiovisual services Communication procedures Gateway control protocol: Enhanced Alerting packages Recommendation ITU-T H.248.2
2、3 ITU-T H-SERIES RECOMMENDATIONS AUDIOVISUAL AND MULTIMEDIA SYSTEMS CHARACTERISTICS OF VISUAL TELEPHONE SYSTEMS H.100H.199 INFRASTRUCTURE OF AUDIOVISUAL SERVICES General H.200H.219 Transmission multiplexing and synchronization H.220H.229 Systems aspects H.230H.239 Communication procedures H.240H.259
3、Coding of moving video H.260H.279 Related systems aspects H.280H.299 Systems and terminal equipment for audiovisual services H.300H.349 Directory services architecture for audiovisual and multimedia services H.350H.359 Quality of service architecture for audiovisual and multimedia services H.360H.36
4、9 Supplementary services for multimedia H.450H.499 MOBILITY AND COLLABORATION PROCEDURES Overview of Mobility and Collaboration, definitions, protocols and procedures H.500H.509 Mobility for H-Series multimedia systems and services H.510H.519 Mobile multimedia collaboration applications and services
5、 H.520H.529 Security for mobile multimedia systems and services H.530H.539 Security for mobile multimedia collaboration applications and services H.540H.549 Mobility interworking procedures H.550H.559 Mobile multimedia collaboration inter-working procedures H.560H.569 BROADBAND, TRIPLE-PLAY AND ADVA
6、NCED MULTIMEDIA SERVICES Broadband multimedia services over VDSL H.610H.619 Advanced multimedia services and applications H.620H.629 Ubiquitous sensor network applications and Internet of Things H.640H.649 IPTV MULTIMEDIA SERVICES AND APPLICATIONS FOR IPTV General aspects H.700H.719 IPTV terminal de
7、vices H.720H.729 IPTV middleware H.730H.739 IPTV application event handling H.740H.749 IPTV metadata H.750H.759 IPTV multimedia application frameworks H.760H.769 IPTV service discovery up to consumption H.770H.779 Digital Signage H.780H.789 For further details, please refer to the list of ITU-T Reco
8、mmendations. Rec. ITU-T H.248.23 (03/2013) i Recommendation ITU-T H.248.23 Gateway control protocol: Enhanced Alerting packages Summary Recommendation ITU-T H.248.23 defines two packages that provide enhanced alerting and data transfer capabilities for Recommendation ITU-T H.248.1. This revision inc
9、ludes updated procedures that discuss how to handle race conditions when the dwa signal is used. A clarification is added to the pattern parameter as to what signal should be used. History Edition Recommendation Approval Study Group 1.0 ITU-T H.248.23 2003-07-14 16 1.1 ITU-T H.248.23 (2003) Cor. 1 2
10、004-03-15 16 2.0 ITU-T H.248.23 2005-01-08 16 2.1 ITU-T H.248.23 (2005) Cor. 1 2006-05-29 16 3.0 ITU-T H.248.23 2013-03-16 16 ii Rec. ITU-T H.248.23 (03/2013) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications, informa
11、tion and communication technologies (ICTs). The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible for studying technical, operating and tariff questions and issuing Recommendations on them with a view to standardizing telecommunications on a world
12、wide basis. The World Telecommunication Standardization Assembly (WTSA), which meets every four years, establishes the topics for study by the ITU-T study groups which, in turn, produce Recommendations on these topics. The approval of ITU-T Recommendations is covered by the procedure laid down in WT
13、SA Resolution 1. In some areas of information technology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. NOTE In this Recommendation, the expression “Administration“ is used for conciseness to indicate both a telecommunication adminis
14、tration and a recognized operating agency. Compliance with this Recommendation is voluntary. However, the Recommendation may contain certain mandatory provisions (to ensure, e.g., interoperability or applicability) and compliance with the Recommendation is achieved when all of these mandatory provis
15、ions are met. The words “shall“ or some other obligatory language such as “must“ and the negative equivalents are used to express requirements. The use of such words does not suggest that compliance with the Recommendation is required of any party. INTELLECTUAL PROPERTY RIGHTS ITU draws attention to
16、 the possibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellectual Property Right. ITU takes no position concerning the evidence, validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members or others outsid
17、e of the Recommendation development process. As of the date of approval of this Recommendation, ITU had not received notice of intellectual property, protected by patents, which may be required to implement this Recommendation. However, implementers are cautioned that this may not represent the late
18、st information and are therefore strongly urged to consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2013 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. Rec. ITU-T H.248.23 (03/2013) iii Tab
19、le of Contents Page 1 Scope 1 2 References. 1 3 Definitions 1 4 Abbreviations and acronyms 1 5 Enhanced Alerting Package 2 5.1 Properties 2 5.2 Events . 2 5.3 Signals 2 5.4 Statistics 4 5.5 Procedures 4 6 Analogue Display Signalling Package 5 6.1 Properties 5 6.2 Events . 5 6.3 Signals 5 6.4 Statist
20、ics 9 6.5 Procedures 9 Bibliography. 11 iv Rec. ITU-T H.248.23 (03/2013) Introduction This Recommendation provides definitions for several supplemental packages for Recommendation ITU-T H.248.1. These packages define alternative signalling for ringing, add the capability for distinctive call waiting
21、 tones and address support of functionality for enhanced telephony services which utilize data transfer to the customer premises equipment. Rec. ITU-T H.248.23 (03/2013) 1 Recommendation ITU-T H.248.23 Gateway control protocol: Enhanced Alerting packages 1 Scope This Recommendation defines two packa
22、ges that provide enhanced alerting and data transfer capabilities for ITU-T H.248.1. The support of these packages is optional. There is a direct mapping between the alert/ri pattern parameter, alert/cw pattern parameter, and to the andisp/dwa pattern parameter. Ringing patterns and call waiting pat
23、terns are paired to allow for distinctive alerting sets. In expanding this parameter in the future, it would be desirable to expand the alert/ri, alert/cw, and andisp/dwa signals together, maintaining the distinctive pattern pairings. This will continue to allow the andisp/dwa signal to have a defin
24、ition independent of the alerting method, linking it only to the alerting style (pattern). 2 References The following ITU-T Recommendations and other references contain provisions which, through reference in this text, constitute provisions of this Recommendation. At the time of publication, the edi
25、tions indicated were valid. All Recommendations and other references are subject to revision; users of this Recommendation are therefore encouraged to investigate the possibility of applying the most recent edition of the Recommendations and other references listed below. A list of the currently val
26、id ITU-T Recommendations is regularly published. The reference to a document within this Recommendation does not give it, as a stand-alone document, the status of a Recommendation. ITU-T H.248.1 Recommendation ITU-T H.248.1 (2013), Gateway control protocol: Version 3. 3 Definitions None. 4 Abbreviat
27、ions and acronyms This Recommendation uses the following abbreviations and acronyms: ADSI Analogue Display Services Interface AOC Advice of Charge BCLID Bulk Calling Line Identification CAS CPE Alerting Signal CLASS Custom Local Area Subscriber Services CPE Customer Premises Equipment DT-AS Dual Ton
28、e Alerting Signal MDMF Multiple Data Message Format MG Media Gateway MGC Media Gateway Controller MIB Management Information Base MWI Message Waiting Indicator RP-AS Ring Pulse Alerting Signal 2 Rec. ITU-T H.248.23 (03/2013) SAS Subscriber Alerting Signal SDMF Single Data Message Format SMS Short Me
29、ssage Service TAS Terminal Alerting Signal 5 Enhanced Alerting Package Package name: Enhanced Alerting Package Package ID: alert (0x003b) Description: This package defines enhanced alerting signals for analogue lines. Version: 2 Extends: None 5.1 Properties None. 5.2 Events None. 5.3 Signals 5.3.1 R
30、ing Signal name: Ring Signal ID: ri (0x0001) Description: Applies ringing to the line Signal type: TimeOut Duration: Provisioned 5.3.1.1 Additional parameters 5.3.1.1.1 Pattern Parameter name: Pattern Parameter ID: pattern (0x0001) Description: The pattern is an abstract indication of the distinctiv
31、e alerting pattern that will be applied to the line. The actual cadence/frequency combination is known by the media gateway. Ring patterns repeat until the signal times out, or is interrupted. Type: Integer Optional: Yes Possible values: 1-256 (0x0001-0x0100) Default: 1 5.3.1.1.2 Tone Direction Para
32、meter name: Tone Direction Parameter ID: btd (0x0002) Rec. ITU-T H.248.23 (03/2013) 3 Description: The tone direction indicates in which direction the signal shall proceed with respect to the centre of the context. “Internal“ denotes that the signal shall proceed toward the centre of the context fro
33、m the termination, while “external“ denotes that the signal shall proceed toward the edge of the context. “Both“ indicates that the signal shall proceed in both directions. Note that using the playtone signal to generate this signal will prevent the capability to use the directionality parameter. Ty
34、pe: Enumeration Optional: Yes Possible values: ext (0x0001) int (0x0002) both (0x0003) Default: ext 5.3.2 Ringsplash Signal name: Ringsplash Signal ID: rs (0x0002) Description: Applies ringsplash to the line. Ringsplash is a short burst of ringing, typically in the range of 500 milliseconds in durat
35、ion. The duration is provisioned in the MG. Signal type: Brief Duration: Provisioned 5.3.2.1 Additional parameters 5.3.2.1.1 Tone Direction Parameter name: Tone Direction Parameter ID: btd (0x0001) Description: The tone direction indicates in which direction the signal shall proceed with respect to
36、the centre of the context. “Internal“ denotes that the signal shall proceed toward the centre of the context from the termination, while “external“ denotes that the signal shall proceed toward the edge of the context. “Both“ indicates that the signal shall proceed in both directions. Note that using
37、 the playtone signal to generate this signal will prevent the capability to use the directionality parameter. Type: Enumeration Optional: Yes Possible values: ext (0x0001) int (0x0002) both (0x0003) Default: ext 5.3.3 Call Waiting Signal name: Call Waiting 4 Rec. ITU-T H.248.23 (03/2013) Signal ID:
38、cw (0x0003) Description: Generate call waiting indication. The cw signal definition takes a pattern parameter, to allow generation of distinctive waiting tones. Signal type: Brief Duration: Varies by pattern 5.3.3.1 Additional parameters 5.3.1.1.1 Pattern Parameter name: Pattern Parameter ID: patter
39、n (0x0001) Description: The pattern is an abstract indication of the distinctive alerting pattern that will be applied to the line. The actual cadence/frequency combination is known by the media gateway. Call wait patterns do not repeat. Type: Integer Optional: Yes Possible values: 1-256 (0x0001-0x0
40、100) Default: 1 5.3.1.1.2 Tone Direction Parameter name: Tone Direction Parameter ID: btd (0x0002) Description: The tone direction indicates in which direction the signal shall proceed with respect to the centre of the context. “Internal“ denotes that the signal shall proceed toward the centre of th
41、e context from the termination, while “external“ denotes that the signal shall proceed toward the edge of the context. “Both“ indicates that the signal shall proceed in both directions. Note that using the playtone signal to generate this signal will prevent the capability to use the directionality
42、parameter. Type: Enumeration Optional: Yes Possible values: ext (0x0001) int (0x0002) both (0x0003) Default: ext 5.4 Statistics None. 5.5 Procedures The frequencies and cadences for the signals in this package shall be provisioned. This provisioning may occur through the use of a MIB. Rec. ITU-T H.2
43、48.23 (03/2013) 5 6 Analogue Display Signalling Package Package name: Analogue Display Signalling Package Package ID: andisp (0x003c) Description: This package defines signalling for data features for analogue lines. These features may include Caller ID, Short Message Service, ADSI, Message Waiting
44、Indicator and others. Version: 2 Extends: alert (0x003b) version 2 6.1 Properties None. 6.2 Events None. 6.3 Signals 6.3.1 Display with Alerting Signal name: Display with Alerting Signal ID: dwa (0x0004) Description: Sends the display information to the CPE. This signal indicates that the data must
45、be applied in conjunction with alerting either power ringing, or call waiting. Therefore, this signal implies alerting, which will be appropriately applied to the CPE by the gateway, based upon the on-hook/off-hook status of the line. The alerting portion of the signal occurs even if the termination
46、 is not equipped to receive the data portion. Signal type: Brief NOTE Explicit changes to the signal duration affect the ringing/call waiting portion of the signal, if applicable. The data transmission should be considered Brief. Duration: Variable depending upon the data transferred 6.3.1.1 Additio
47、nal parameters 6.3.1.1.1 Display Data Block Parameter name: Display Data Block Parameter ID: ddb (0x0001) Description: The Display Data Block contains the message data with any required checksum to be sent to the CPE. Binary encoding is the binary data itself, while text encoding shall carry the dat
48、a as a big-endian encoded hex string. For example, in North America for basic Caller ID, this would be the SDMF or MDMF construct, including the checksum. The default value is an empty data block which will be silently discarded by the gateway. Once the signal is processed, failure to transmit the d
49、isplay data portion of the signal for any reason SHALL NOT generate an Error 6 Rec. ITU-T H.248.23 (03/2013) Descriptor. This includes attempts to transmit to a CPE that is not equipped to handle the data. Application of the alerting portion of the signal should proceed as if there had been no display data transmission request in the first place. This includes errors in the data itself, or a bad checksum. Type: Octet String Optional: Yes Possible values: See description Default: Empty 6.3.1.1.2 Pattern Parameter name: Pattern Parameter ID:
