1、 International Telecommunication Union ITU-T H.248.34TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (02/2012) SERIES H: AUDIOVISUAL AND MULTIMEDIA SYSTEMSInfrastructure of audiovisual services Communication procedures Gateway control protocol: Stimulus analogue line package Recommendation ITU-T H.2
2、48.34 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
3、.259Coding 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.360
4、H.369 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 serv
5、ices 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
6、ADVANCED 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 termina
7、l devices 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 For further details, please refer to the list of ITU-T Recommendations. Rec. ITU-T
8、 H.248.34 (02/2012) i Recommendation ITU-T H.248.34 Gateway control protocol: Stimulus analogue line package Summary Recommendation ITU-T H.248.34 describes a stimulus analogue line package that defines new ITU-T H.248 events, signals and parameters derived from the V5 PSTN protocol defined in Recom
9、mendation ITU-T G.964. To assist both vendors and operators in migrating V5 local exchange and access network nodes to a next generation network (NGN) media gateway (MG) and media gateway controller (MGC) architecture, the package provides guidelines for mapping the V5 PSTN protocol to the “stimulus
10、 analogue line“ package, other TU-T H.248 packages and the ITU-T H.248.1 protocol. This revision clarifies dialling method indications, implements a syntactical correction of steady state signal “reversed polarity“ (see Table 6) and corrects the V5 digit-signal information element mapping (Table I.2
11、). History Edition Recommendation Approval Study Group 1.0 ITU-T H.248.34 2005-01-08 16 2.0 ITU-T H.248.34 2012-02-13 16 ii Rec. ITU-T H.248.34 (02/2012) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications, information
12、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 worldwide
13、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 WTSA Re
14、solution 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 administrati
15、on 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 provisions
16、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 the
17、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 outside of
18、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 latest in
19、formation and are therefore strongly urged to consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2012 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.248.34 (02/2012) iii Table of
20、 Contents Page 1 Scope 1 2 References. 1 3 Definitions 2 4 Abbreviations and acronyms 2 5 Conventions 2 6 Stimulus Analogue Line Package . 2 6.1 Properties 3 6.2 Events . 3 6.3 Signals 8 6.4 Statistics 11 6.5 Procedures 11 Appendix I V5 to ITU-T H.248 mapping overview . 21 Bibliography. 24 Rec. ITU-
21、T H.248.34 (02/2012) 1 Recommendation ITU-T H.248.34 Gateway control protocol: Stimulus analogue line package 1 Scope The stimulus analogue line package defines ITU-T H.248 signals and events that are exchanged between a media gateway (MG) and a media gateway controller (MGC) for controlling analogu
22、e plain old telephone service (POTS) lines which can, for example, be used to host telephones, analogue private branch exchanges (PBXs) and turn-key systems. The signals and events defined in the package are stimulus in nature and enable the full set of POTS services that are delivered via a V5 loca
23、l exchange (LE) and access network (AN) to be ubiquitously provided in a next generation network (NGN) MG and MGC architecture. NOTE The use of the Call Finished signal is a national option. It is included as part of a joint text with ETSI. In normal circumstances, the national specific functionalit
24、y shall be included as a separate package. The use of the Call Finished signal shall not compromise existing ITU-T H.248 procedures. 2 References The following ITU-T Recommendations and other references contain provisions which, through reference in this text, constitute provisions of this Recommend
25、ation. At the time of publication, the editions 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
26、 listed below. A list of the currently valid 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 G.964 Recommendation ITU-T G.964 (2001), V-interfaces at the digital loc
27、al exchange (LE) V5.1 interface (based on 2048 kbit/s) for the support of access network (AN). ITU-T G.965 Recommendation ITU-T G.965 (2001), V-interfaces at the digital local exchange (LE) V5.2 interface (based on 2048 kbit/s) for the support of access network (AN). ITU-T H.248.1 Recommendation ITU
28、-T H.248.1 (2002), Gateway control protocol: Version 2, plus Corrigendum 1 (2004). ITU-T H.248.8 Recommendation ITU-T H.248.8 (2002), Gateway control protocol: Error code and service change reason description, plus Amendment 1 (2004), New error code 458 (Unexpected Event/RequestID). ITU-T H.248.23 R
29、ecommendation ITU-T H.248.23 (2005), Gateway control protocol: Enhanced alerting packages. ITU-T H.248.26 Recommendation ITU-T H.248.26 (2003), Gateway control protocol: Enhanced analogue lines packages, plus Amendment 1 (2005). ITU-T H.248.70 Recommendation ITU-T H.248.70 (2009), Gateway control pr
30、otocol: Dialling method information packages. 2 Rec. ITU-T H.248.34 (02/2012) 3 Definitions This Recommendation defines the following terms: 3.1 access network (AN): A system implemented between the local exchange (LE) and user, replacing part or the whole of the local line distribution network. 3.2
31、 local exchange (LE): An exchange on which user lines are terminated via an access network (AN). 3.3 V5: A general term for the family of V interfaces for connection of ANs to the LE, e.g., a V5.1 interface or a V5.2 interface. 4 Abbreviations and acronyms This Recommendation uses the following abbr
32、eviations and acronyms: AN Access Network BCC Bearer Channel Connection FSK Frequency-Shift Keying LE Local Exchange MG Media Gateway MGC Media Gateway Controller NGN Next Generation Network PBX Private Branch Exchange POTS Plain Old Telephone Service PSTN Public Switched Telephone Network TDM Time
33、Division Multiplex 5 Conventions None. 6 Stimulus Analogue Line Package Package name: Stimulus Analogue Line Package Package ID: stimal (0x0093) Description: This package defines all the stimulus events and signals necessary for controlling an analogue line. This analogue line package is different f
34、rom other ITU-T H.248 analogue line packages, because the analogue signals and events that are exchanged between the MGC and the MG are stimulus rather than functional in nature. The stimulus approach enables the MG to be transparent to the underlying service being delivered by the MGC and also does
35、 not unduly restrict the types of services that may be delivered to an analogue line. The ITU-T H.248 signals and events have been derived from the V5 PSTN protocol signals defined in ITU-T G.965, ITU-T G.964. This approach enables the MGC to support the same type of services and capabilities as the
36、 existing PSTN network. Rec. ITU-T H.248.34 (02/2012) 3 NOTE Unlike an AN as defined in ITU-T G.964 and ITU-T G.965, an ITU-T H.248 MG has the capability to detect in-band (e.g., DTMF) signals, generate local tones and announcements and generate frequency-shift keying (FSK) tones for caller display
37、purposes. Control of these capabilities is provided by other packages in the ITU-T H.248 series of Recommendations. The stimulus analogue line package is a superset package that defines the full repertoire of signals and events. A particular PSTN national authority may support a subset of the signal
38、s, events and parameters listed in the package. Version: 1 Extends: none 6.1 Properties None. 6.2 Events 6.2.1 Steady signal Event name: Steady Signal Event ID: stedsig (0x0001) Description: Activation of the “Steady Signal“ event results in either all the steady signals that are supported by the MG
39、 being reported to the MGC, or a list of specified steady signals being reported by the MG to the MGC. The former functionality is achieved by excluding the events descriptor parameter “Signal to Detect“ when the event descriptor is activated. The latter functionality is achieved by including the ev
40、ents descriptor parameter “Signal to Detect“ when the events descriptor is activated. The actual steady signal that is reported to the MGC is identified by the ObservedEventsDescriptor parameter “Detected Signal“. The default recognition time of a particular steady signal may be modified via the eve
41、nts descriptor parameter “Recognition Time“. 6.2.1.1 EventsDescriptor parameters 6.2.1.1.1 Signal to Detect Parameter name: Signal to Detect Parameter ID: detectsig (0x0001) Description: This parameter indicates to the MG the type of steady signals that are to be recognized by the MG. If this parame
42、ter is excluded, then all steady signals that are recognized by the MG are detected and subsequently reported via the ObservedEvents descriptor. If this parameter is included, then only the specified list of steady signals are detected and subsequently reported via the ObservedEvents descriptor. Typ
43、e: sub-list of Enumeration 4 Rec. ITU-T H.248.34 (02/2012) Optional: yes Possible values: See Table 1 below for a list of steady signal parameter names and values. Default: all steady signals Table 1 Steady signal parameter names and values Text encoding Binary encoding “normalPolarity“ (0x0000) “re
44、versePolarity“ (0x0001)“batteryOnC-wire“ (0x0002)“noBatteryOnC-wire“ (0x0003)“offHook“ (0x0004)“onHook“ (0x0005)“batteryOnA-wire“ (0x0006) “aWireonEarth“ (0x0007)“noBatteryOnA-wire“ (0x0008)“noBatteryOnB-wire“ (0x0009)“reducedBattery“ (0x000a) “noBattery“ (0x000b)“alternateReducedPower“ (0x000c) “no
45、rmalBattery“ (0x000d) “stopRinging“ (0x000e) “startPilotFrequency“ (0x000f)“stopPilotFrequency“ (0x0010)“lowImpedanceonB-wire“ (0x0011) “b-wireConnectedtoearth“ (0x0012)“b-wireDisconnectedfromearth“ (0x0013)“batteryOnB-wire“ (0x0014)“lowLoopImpedance“ (0x0015)“highLoopImpedance“ (0x0016) “anomalousL
46、oopImpedance“ (0x0017)“a-wireDisconnectedfromearth“ (0x0018)“c-wireOnearth“ (0x0019)“c-wireDisconnectedfromearth“ (0x001a) “rampToReversePolarity“ (0x001d) “rampToNormalPolarity“ (0x001e) Rec. ITU-T H.248.34 (02/2012) 5 6.2.1.1.2 Recognition Time Parameter name: Recognition Time Parameter ID: rectim
47、e (0x0002) Description: This parameter is included if the default recognition time of a steady signal is to be modified. Type: integer Optional: yes Possible values: Any positive value in milliseconds. Default: provisioned default for each steady signal 6.2.1.2 ObservedEventsDescriptor parameters 6.
48、2.1.2.1 Detected Signal Parameter name: Detected Signal Parameter ID: sig (0x0001) Description: This parameter returns the detected steady signal. Type: enumeration Optional: no Possible values: See Table 1 for a list of steady signal parameter names and values. Default: none 6.2.2 Line Information
49、Event name: Line Information Event ID: lineinfo (0x0002) Description: The line information is used to transmit specific information on the subscriber line status to the MGC. 6.2.2.1 EventsDescriptor parameters None. 6.2.2.2 ObservedEventsDescriptor parameters 6.2.2.2.1 Line Information Parameter name: Line Information Parameter ID: info (0x0001) Description: This parameter indicates that the status of the subscriber line has changed. Type: enumeration Optional: no Possible values: See Table 2 for a list of line inform
