Media Gateway Control C. Michael Brown Keven Chapman Kevin Boyle Internet Draft Nortel Networks Document: draft-brown-supplpkgs-00.txt March 2000 Category: Informational Supplemental Packages for Megaco/H.248 Status of this Memo This document is an Internet-Draft and is in full conformance with all provisions of Section 10 of RFC2026 [1]. Internet-Drafts are working documents of the Internet Engineering Task Force (IETF), its areas, and its working groups. Note that other groups may also distribute working documents as Internet- Drafts. Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet- Drafts as reference material or to cite them other than as "work in progress." The list of current Internet-Drafts can be accessed at http://www.ietf.org/ietf/1id-abstracts.txt The list of Internet-Draft Shadow Directories can be accessed at http://www.ietf.org/shadow.html. 1. Abstract This document provides proposed definitions for several supplemental packages for Megaco/H.248. These packages address support of functionality for basic and enhanced telephony services, and PSTN Per Trunk Signaling (PTS). 2. Conventions used in this document The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in RFC-2119 [2]. 3. Telephony services package definitions 3.1 Expanded Call Progress Tones Generator Package PackageID: xcg Version: 1 Extends: cg version 1 Supplemental Packages for Megaco/H.248 March 2000 This package defines additional call progress indications as signals. Properties None. Events None. Signals Comfort Tone SignaID: cmft Generate comfort tone, to indicate that the call is still in the process of being connected. The physical characteristic of comfort tone is available in the gateway. Signal Type: Timeout Duration: Provisioned Additional Parameters: None Off-Hook Warning Tone SignaID: roh Generate receiver off-hook warning tone, to urge the customer to replace the receiver on the cradle. The physical characteristic of roh tone is available in the gateway. Signal Type: Timeout Duration: Provisioned Additional Parameters: None Negative Acknowledgement SignaID: nack Signal negative acknowledgement. The physical characteristic of nack tone is available in the gateway. Signal Type: Timeout Duration: Provisioned Additional Parameters: None Vacant Number Tone SignaID: vac Signal that the number dialed routes to a non-existent address. The physical characteristic of vacant tone is available in the gateway. Signal Type: Timeout Duration: Provisioned Additional Parameters: None Statistics None. Procedures None. 3.2 Enhanced Alerting Package PackageID: alert Supplemental Packages for Megaco/H.248 March 2000 Version: 1 Extends: This package defines enhanced alerting signals for an analog line. Properties None. Events None. Signals Ring SignalID: ri Applies ringing to the line. Signal Type: TimeOut Duration: Provisioned Additional Parameters: Pattern ParameterID: pattern Type: Enumeration Possible Values: 1, 2, 3, 4 The pattern is an abstract indication of the distinctive alerting pattern that will be applied to the line. The alert/ri pattern parameter has a direct mapping to the alert/cw pattern parameter and the alert/cid pattern parameter. The actual cadence/frequency combination is available in the gateway. The default is pattern 1, which indicates the default alerting style. Ring patterns repeat until the signal times out, or is interrupted. Ringsplash SignalID: rs Applies ringsplash to the line. Signal Type: Brief Duration: 500 milliseconds Additional Parameters: None. Call Waiting SignaID: cw Generate call waiting indication to the user. The cw signal definition takes a pattern parameter, to allow generation of distinctive waiting tones. Signal Type: Brief Duration: Varies by pattern. Additional Parameters: Pattern ParameterID: pattern Type: Enumeration Possible Values: 1, 2, 3, 4 The pattern is an abstract indication of the distinctive alerting pattern that will be applied to the line. The cw pattern parameter has a direct mapping to the ri pattern parameter and the cid pattern parameter. The actual cadence/frequency combination is available in Supplemental Packages for Megaco/H.248 March 2000 the gateway. The default is pattern 1, which indicates the default alerting style. Call wait patterns do not repeat. Caller Identification SignalID: cid Sends the date, caller's name and caller's number to the CPE display, if the set is so equipped. Caller ID is unique in that it must be applied during 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. Signal Type: Brief Duration: Variable Additional Parameters: CID Data Block ParameterID: cdb Type: String Possible Values: See description. The CID Data Block contains the hex message data to be sent to the set. For example, in North America, this would be the SDMF or MDMF construct. The default value is an empty data block, which will be discarded by the gateway. Pattern ParameterID: pattern Type: Enumeration Possible Values: 1, 2, 3, 4 The pattern is an abstract indication of the distinve alerting pattern that will be applied to the line. The cid pattern parameter maps to the ri pattern parameter for on-hook signalling, and to the cw pattern parameter for off-hook signalling. The default is pattern 1, which indicates the default alerting style. Statistics None. Procedures None. 3.3 Basic Services Tones Generation Package PackageID: srvtn Version: 1 Extends: cg version 1 This package defines signals for use by various telephony services. Properties None. Events Events are defined as in this package for the signals. Supplemental Packages for Megaco/H.248 March 2000 Signals Recall Dial Tone SignalID: rdt Generate recall dial tone. The physical characteristic of recall dial tone is available in the gateway. Signal Type: Timeout Duration: Provisioned Additional Parameters: None Confirmation Tone SignalID: conf Generate confirmation tone. The physical characteristic of confirmation tone is available in the gateway. Signal Type: Brief Duration: N/A Additional Parameters: None Held tone SignalID: ht Generate held tone. The physical characteristic of held tone is available in the gateway. Signal Type: Timeout Duration: Provisioned Additional Parameters: None Statistics None. Procedures None. 4. PSTN Trunking Packages 4.1 Robbed Bit Signalling Package PackageID: rbs Version: 1 Extends: Properties Wink Duration PropertyID: wkdur Defines wink duration in milliseconds. Type: Integer Possible Values: Generation: >=140 and <= 290 Detection: >= 100 and <= 350 Defined In: LocalDescriptor Characteristics: Global Read/Write Delay Dial Duration Supplemental Packages for Megaco/H.248 March 2000 PropertyID: dddur (0x0041) Defines delay dial duration in milliseconds. Type: Integer Possible Values: Generation: >=140 Detection: >= 100 Defined In: LocalDescriptor Characteristics: Global Read/Write Events Seize EventID: sz Gateway detects and reports off-hook. EventsDescriptor Parameters: None. ObservedEventsDescriptor Parameters: None. Start Signal EventID: ss Gateway detects and reports a timed transition from on-hook to off- hook (leading edge) and off-hook to on-hook (trailing edge). Start Signal type is provisioned on a termination basis. EventsDescriptor Parameters: None. ObservedEventsDescriptor Parameters: None. Wink EventID: wk Gateway detects and reports a timed transition from on-hook to off- hook (leading edge) and off-hook to on-hook (trailing edge) for ANI request and wink start signal, and off-hook to on-hook (leading edge) and on-hook to off-hook (trailing edge) for Multi-Wink and Inband/Enhanced Inband Signalling. EventsDescriptor Parameters: None. ObservedEventsDescriptor Parameters: None. Answer EventID: an Gateway detects and reports off-hook. EventsDescriptor Parameters: None. ObservedEventsDescriptor Parameters: None. Unseize EventID: us Gateway detects and reports on-hook. EventsDescriptor Parameters: None. ObservedEventsDescriptor Parameters: None. Signals Seize SignaID: sz Gateway signals off-hook. Signal Type: Brief Duration: 140-150 milliseconds Supplemental Packages for Megaco/H.248 March 2000 Additional Parameters: None Start Signal SignaID: ss Gateway signals a timed transition from on-hook to off-hook (leading edge) and off-hook to on-hook (trailing edge). Start Signal type provisioned on a termination basis through package properties. Signal Type: Brief Duration: Defined by wkdur and dddur properties. Additional Parameters: None Wink SignaID: wk Gateway signals a timed transition from on-hook to off-hook (leading edge) and off-hook to on-hook (trailing edge) for ANI request and wink start signal, and off-hook to on-hook (leading edge) and on- hook to off-hook (trailing edge) for Multi-Wink and Inband/Enhanced Inband Signalling. Signal Type: Brief Duration: Defined by wkdur property. Additional Parameters: None Outpulse SignaID: op Gateway signals digits specified in digit register (dr) parameter. Signal Completion Notification will be used to indicate, to MGC, digit outpulsing to network has completed. Signal Type: Brief Duration: Variable depending on number of digits to outpulse. Additional Parameters: Digit Register ParameterID: dr Type: string Possible Values: Each charater in the string is a digit Contains the complete string of digits to be outpulsed. Answer SignaID: an Gateway signals off-hook. Signal Type: Brief Duration: 140-150 milliseconds. Additional Parameters: None Unseize SignaID: us Gateway signals on-hook. Signal Type: Brief Duration: 140-150 milliseconds. Additional Parameters: None Procedures None. Supplemental Packages for Megaco/H.248 March 2000 4.2 Multi-Frequency Generation and Detection Package PackageID: mfgd Version: 1 Extends: Properties Signalling Type PropertyID: sigtype Defines signalling characteristics. Type: Enumeration Possible Values: MF Defined In: LocalDescriptor Characteristics: Global Read/Write KP Duration PropertyID: kpdur Defines MF KP digit (and its variants) duration in milliseconds. Type: Integer Possible Values: Generation: >=90 and <= 120 Detection: >= 55 Defined In: LocalDescriptor Characteristics: Global Read/Write MF and ST Duration PropertyID: mfstdur Defines MF digit and ST digit (and its variants) duration in milliseconds. Type: Integer Possible Values: Generation: >=58 and <= 75 Detection: >= 30 Defined In: LocalDescriptor Characteristics: Global Read/Write Interdigit Interval PropertyID: idint Defines MF digits interdigit interval duration in milliseconds. Type: Integer Possible Values: Generation: >=58 and <= 75 Detection: >= 25 Defined In: LocalDescriptor Characteristics: Global Read/Write Events MF 0 EventID: mf0 Gateway detects and reports Multi-Frequency digit _0_. Supplemental Packages for Megaco/H.248 March 2000 EventsDescriptor Parameters: None. ObservedEventsDescriptor Parameters: None. The detection events for the other digits (1-9, A-F) are defined in the same way. The A-F digits have the following mappings to ST and KP digits: mfa: None. mfa is an alternate expression for mf0. mfb: KP3, ST3P. mfc: KPP, STP. mfd: KP, STKP. mfe: KP2, ST2P. mff: ST. Digit Map Completion Event EventID: ce Signifies Digit Map criteria has been met. Note: Digit Map criteria must have been specified via DigitMap Descriptor (e.g. [b-f]x.[b-f]) in order to receive this event. Example given defines the criteria as being any KP variant followed by any number of digits 0 through 9 followed by any ST variant. EventsDescriptor Parameters: None. ObservedEventsDescriptor Parameters: Digit Register (DR) consisting of MF digits reported to have met the specified Digit Map criteria. Method (M) indication reason for observed event (e.g. Unambiguous Match (UM), Partial Match (PM), Full Match (FM)). Signals MF 0 SignaID: mf0 Generate Multi-Frequency digit _0_. Signal Type: Brief Duration: >= 58 and <= 75 milliseconds.. Additional Parameters: None The signals for the other MF digits (1-9, A-F) are defined in the same fashion. The A-F digits have the following mappings to ST and KP digits: mfa: None. mfa is an alternate expression for mf0. mfb: KP3, ST3P. mfc: KPP, STP. mfd: KP, STKP. mfe: KP2, ST2P. mff: ST. The duration of the ST variants matches that of the 0-9 digits. The duration of the KP variants shall be >= 90 milliseconds, and <= 120 milliseconds. Statistics None. Procedures None. Supplemental Packages for Megaco/H.248 March 2000 5. Formal Syntax Not Applicable The following syntax specification uses the augmented Backus-Naur Form (BNF) as described in RFC-2234 [3]. 6. Security Considerations Not Applicable 7. References 1 Bradner, S., "The Internet Standards Process -- Revision 3", BCP 9, RFC 2026, October 1996. 2 Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, March 1997 3 Crocker, D. and Overell, P.(Editors), "Augmented BNF for Syntax Specifications: ABNF", RFC 2234, Internet Mail Consortium and Demon Internet Ltd., November 1997 8. Acknowledgments 9. Author's Addresses C. Michael Brown Nortel Networks 4008 Chapel Hill Road Research Triangle Park, NC USA 27709 Phone: (919) 991-7767 Email: C.Michael.Brown@nortelnetworks.com Keven Chapman Nortel Networks 4008 Chapel Hill Road Research Triangle Park, NC USA 27709 Phone: (919) 991-4785 Email: keven@americasm01.nt.com Kevin Boyle Supplemental Packages for Megaco/H.248 March 2000 Nortel Networks 4008 Chapel Hill Road Research Triangle Park, NC USA 27709 Phone: (919) 991-2690 Email: kboyle@nortelnetworks.com> Supplemental Packages for Megaco/H.248 March 2000 Full Copyright Statement "Copyright (C) The Internet Society (date). All Rights Reserved. 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