ETSI EN 300 324-1 V1.2.2 (1999-06)

SLOVENSKI STANDARD
01-april-2005
Vmesniki V pri digitalnih krajevnih centralah (LE) – Vmesnik V5.1 za podporo
dostopovnemu omrežju (AN) – 1. del: Specifikacija vmesnika V5.1
V interfaces at the digital Local Exchange (LE); V5.1 interface for the support of Access
Network (AN); Part 1: V5.1 interface specification
Ta slovenski standard je istoveten z: EN 300 324-1 Version 1.2.3
ICS:
33.040.30 Komutacijski in signalizacijski Switching and signalling
sistem systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 300 324-1 V1.2.3 (1999-06)
European Standard (Telecommunications series)
V interfaces at the digital Local Exchange (LE);
V5.1 interface for the support of Access Network (AN);
Part 1: V5.1 interface specification

2 ETSI EN 300 324-1 V1.2.3 (1999-06)
Reference
REN/SPS-09050-1 (30090iq0.PDF)
Keywords
V interface, V5 interface, LE, AN
ETSI
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© European Telecommunications Standards Institute 1999.
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ETSI
3 ETSI EN 300 324-1 V1.2.3 (1999-06)
Contents
Intellectual Property Rights.14
Foreword .14
Introduction .15
1 Scope.17
2 References.18
3 Definitions, symbols and abbreviations.19
3.1 Definitions . 19
3.2 Symbols and abbreviations . 21
4 Electrical and physical interface requirements .23
5 Procedural interface requirements .28
6 Services and architecture aspects and requirements .31
6.1 On-demand services. 31
6.1.1 PSTN. 31
6.1.2 ISDN Basic Access (ISDN-BA). 32
6.2 Permanent Line (PL) capability . 32
6.3 Semi-permanent leased line . 32
6.4 Permanent leased line services. 33
7 Control and provisioning .34
7.1 Control principles . 34
7.1.1 General requirements and assumptions . 34
7.1.2 Control of ISDN user port for the PL capability . 36
7.1.2.1 Statements and assumptions . 36
7.1.2.2 ISDN and PL capability. 36
7.1.2.3 Decoupling of AN and LE FSM . 36
7.2 Provisioning strategy and requirements . 36
7.2.1 General. 36
7.2.2 Provisioning requirements. 36
8 Protocol architecture and multiplexing structure.38
8.1 Functional description. 38
8.2 Protocol requirements for PSTN and ISDN. 39
8.3 Time slots. 40
8.4 Time slot allocation for C-channels . 40
8.5 L2 sublayering and multiplexing on C-channels. 41
8.6 L3 multiplexing. 41
8.7 Congestion control. 41
8.7.1 Flow control end to end. 41
8.7.2 Congestion control on the V5.1 interface. 41
8.7.3 Blocking of ISDN user ports at L2. 41
8.7.4 Flow control using LAPV5-DL mechanisms. 42
9 Envelope Function sublayer of LAPV5 (LAPV5-EF).42
9.1 Frame structure for peer-to-peer communication. 42
9.1.1 General. 42
9.1.2 Flag sequence. 42
9.1.3 Interframe time fill . 42
9.1.4 Envelope function address field . 42
9.1.5 Envelope information field. 43
9.1.6 Transparency. 43
9.1.7 FCS . 43
9.1.8 Format convention. 43
9.1.9 Invalid frames. 43
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4 ETSI EN 300 324-1 V1.2.3 (1999-06)
9.1.10 Frame aborts. 43
9.2 Format of fields for data link envelope peer-to-peer communication . 44
9.2.1 Envelope function address field format. 44
9.2.2 Address field variables. 44
9.2.2.1 Address field extension bit . 44
9.2.2.2 EFaddr . 44
10 Data link sublayer of LAPV5 (LAPV5-DL).44
10.1 Frame structure for peer-to-peer communication. 44
10.1.1 General. 44
10.1.2 Link address field. 45
10.1.3 Control field . 45
10.1.4 Information field . 45
10.1.5 Format convention. 45
10.2 Invalid frames . 45
10.3 Elements of procedures and formats of fields for data link sublayer peer-to-peer communication. 45
10.3.1 Link address field format . 45
10.3.2 Link address field variables. 45
10.3.2.1 Address field extension (EA) bit . 45
10.3.2.2 Command/response field bit . 45
10.3.2.3 V5DLaddr. 46
10.3.3 Control field formats . 46
10.3.4 Control field parameters and associated state variables . 46
10.3.5 Frame types . 46
10.4 Definition of the peer-to-peer procedures of the data link sublayer. 46
10.4.1 General. 46
10.4.2 Procedure for the use of the Poll/Final (P/F) bit. 48
10.4.3 Terminal Endpoint Identifier (TEI) management procedures . 48
10.4.4 Automatic negotiation of data link layer parameters. 48
10.4.5 Procedures for establishment and release of multiple frame operation .48
10.4.5.1 Establishment of multiple frame operation . 48
10.4.5.1.1 General. 48
10.4.5.1.2 Establishment procedures. 49
10.4.5.1.3 Procedure on expiry of timer T200 . 49
10.4.5.2 Information transfer. 50
10.4.5.3 Termination of multiple frame operation. 50
10.4.5.4 Link-not-established state . 50
10.4.5.5 Collision of unnumbered commands and responses . 50
10.4.5.5.1 Identical transmitted and received commands. 50
10.4.5.5.2 Different transmitted and received commands. 50
10.4.5.6 Unsolicited DM response and SABME command. 50
10.4.6 Procedures for information transfer in multiple frame operation . 51
10.4.7 Re-establishment of multiple frame operation. 51
10.4.7.1 Criteria for re-establishment . 51
10.4.7.2 Procedures . 51
10.4.8 Exception condition reporting and recovery . 51
10.4.9 List of system parameters. 52
10.4.10 Data link monitor function . 52
10.4.10.1 General . 52
10.4.10.2 Data link layer supervision in the multiple-frame-established state. 52
10.4.10.3 Connection verification procedures . 52
10.4.11 PSTN and control data link FSM and requirements. 52
10.4.11.1 General . 52
10.4.11.2 Data link FSM . 53
11 AN frame relay sublayer .55
11.1 General. 55
11.2 Invalid frames . 55
11.3 Detailed description of the AN frame relay function . 56
11.3.1 Frame received from LE. 56
11.3.2 Frame received from ISDN user port . 56
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5 ETSI EN 300 324-1 V1.2.3 (1999-06)
12 Sublayer-to-sublayer communication and MF.57
12.1 LAPV5-EF to LAPV5-DL communication. 57
12.2 LAPV5-DL to LAPV5-EF communication. 57
12.3 AN-FR to LAPV5-EF communication. 57
12.4 LAPV5-EF to AN-FR communication. 57
13 PSTN signalling protocol specification and L3 multiplexing.57
13.1 General. 57
13.1.1 Introduction. 57
13.1.2 Separation of responsibilities . 58
13.1.3 National specific PSTN signal information elements. 58
13.2 PSTN protocol entity definition. 59
13.2.1 Definition of PSTN path states and explanation. 59
13.2.1.1 Path states in the AN (AN(PSTN)). 59
13.2.1.2 Path states in the LE (LE(PSTN)) . 59
13.2.2 Definition of PSTN protocol primitives, messages and timers. 60
13.3 PSTN protocol message definition and content . 61
13.3.1 Establish. 62
13.3.2 Establish ACK. 62
13.3.3 Signal . 63
13.3.4 Signal ACK . 63
13.3.5 Status. 63
13.3.6 Status enquiry. 64
13.3.7 Disconnect. 64
13.3.8 Disconnect complete . 64
13.3.9 Protocol parameter . 65
13.4 General message format and information element coding . 65
13.4.1 Overview. 65
13.4.2 Protocol discriminator. 66
13.4.3 L3addr. 66
13.4.4 Message type. 66
13.4.5 Coding of other information elements. 67
13.4.6 Single octet information elements . 68
13.4.6.1 Pulse notification . 68
13.4.6.2 Line-information. 68
13.4.6.3 State. 68
13.4.6.4 Autonomous-signalling-sequence . 69
13.4.6.5 Sequence-response. 69
13.4.7 Information elements with variable length format. 69
13.4.7.1 Sequence-number . 69
13.4.7.2 Cadenced-ringing. 70
13.4.7.3 Pulsed-signal. 71
13.4.7.4 Steady-signal . 72
13.4.7.5 Digit-signal . 73
13.4.7.6 Recognition-time . 74
13.4.7.7 Enable-autonomous-acknowledge . 74
13.4.7.8 Disable-autonomous-acknowledge . 75
13.4.7.9 Cause . 76
13.4.7.10 Resource-unavailable. 77
13.4.7.11 Enable-metering. 77
13.4.7.12 Metering-report. 78
13.4.7.13 Attenuation . 79
13.5 PSTN call control procedures. 79
13.5.1 General. 80
13.5.2 Handling of error conditions . 80
13.5.2.1 Protocol discriminator error. 81
13.5.2.2 L3addr error. 81
13.5.2.3 Message type error. 81
13.5.2.4 Information element out of sequence. 82
13.5.2.5 Repeated information elements. 82
13.5.2.6 Mandatory information element missing . 82
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6 ETSI EN 300 324-1 V1.2.3 (1999-06)
13.5.2.7 Unrecognized information element. 83
13.5.2.8 Content error of mandatory information element. 83
13.5.2.9 Content error of optional information element . 83
13.5.2.10 Unexpected message. 84
13.5.2.11 Optional information element not allowed . 84
13.5.2.12 Optional information element missing. 84
13.5.2.13 Status enquiry procedure . 84
13.5.2.14 Status procedure . 85
13.5.3 Path related procedures . 86
13.5.3.1 Path initiation by AN. 87
13.5.3.1.1 Subscriber seizure request. 87
13.5.3.1.2 Subscriber seizure confirmation. 87
13.5.3.2 Path initiation by LE. 88
13.5.3.2.1 Establish request . 88
13.5.3.2.2 Establish acknowledge. 89
13.5.3.3 Path collision . 89
13.5.3.3.1 Originating call prevail . 90
13.5.3.3.2 Destination call prevail . 90
13.5.3.4 Path active . 90
13.5.3.4.1 Normal operation . 90
13.5.3.4.2 Exceptional procedures. 91
13.5.3.5 Disconnecting path . 91
13.5.3.5.1 Disconnect request . 92
13.5.3.5.2 Disconnect acknowledge. 93
13.5.3.6 Line information procedure . 93
13.5.3.6.1 Normal operation . 93
13.5.3.6.2 Exceptional procedures. 94
13.5.4 Non-path related procedures . 94
13.5.4.1 Protocol parameter procedures . 94
13.5.4.1.1 Normal operation . 94
13.5.4.1.2 Exceptional procedures. 94
13.5.4.2 Port blocking procedures. 95
13.5.4.3 Restart procedure. 95
13.5.5 L3 error detection procedure. 96
13.5.5.1 Multiple SIGNAL message operation - variables, sequence numbers and timers . 96
13.5.5.1.1 Modulus . 96
13.5.5.1.2 Send sequence variable S(S) . 96
13.5.5.1.3 Acknowledge sequence variable S(A). 96
13.5.5.1.4 Send sequence number M(S) . 96
13.5.5.1.5 Receive sequence variable S(R). 96
13.5.5.1.6 Receive sequence number M(R) . 97
13.5.5.1.7 Timer Tt. 97
13.5.5.1.8 Timer Tr. 97
13.5.5.2 Multiple SIGNAL message operation - procedures. 97
13.5.5.2.1 Initialization . 97
13.5.5.2.2 Sending a SIGNAL message. 97
13.5.5.2.3 Sending a SIGNAL ACK message. 97
13.5.5.2.4 Receiving a SIGNAL message. 97
13.5.5.2.5 Receiving a SIGNAL ACK message. 97
13.5.5.2.6 Start of timer Tr . 98
13.5.5.2.7 Stop of timer Tr. 98
13.5.5.2.8 Timeout of timer Tr . 98
13.5.5.2.9 Start of timer Tt. 98
13.5.5.2.10 Stop of timer Tt. 98
13.5.5.2.11 Timeout of timer Tt. 98
13.5.5.2.12 Receiving a DISCONNECT message . 98
13.5.5.3 Multiple SIGNAL message operation - values . 98
13.5.5.3.1 Number of outstanding SIGNAL messages . 98
13.5.5.3.2 Timer Tt. 98
13.5.5.3.3 Timer Tr. 98
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7 ETSI EN 300 324-1 V1.2.3 (1999-06)
13.6 List of system parameters. 99
13.7 AN and LE side state tables . 99
14 Control requirements and protocol .105
14.1 ISDN user port status indication and control protocol. 105
14.1.1 General aspects. 105
14.1.2 Events and function elements relevant for the control of the state machines . 107
14.1.3 ISDN user port FSMs, AN (ISDN port) and LE (ISDN port). 109
14.1.3.1 Description of the states. 109
14.1.3.2 Definition of port control states. 110
14.1.3.2.1 ISDN user port FSM - AN (ISDN port). 110
14.1.3.2.2 ISDN User port FSM - LE (ISDN port). 110
14.1.3.3 Principles and procedures. 111
14.1.3.3.1 General. 111
14.1.3.3.2 Blocking. 111
14.1.3.3.3 Blocking request . 111
14.1.3.3.4 Co-ordinated unblocking. 112
14.1.3.3.5 Activation. 112
14.1.3.4 ISDN port FSM at the AN. 113
14.1.3.5 ISDN port FSM at the LE. 115
14.1.4 Performance monitoring aspects . 115
14.2 PSTN user port status indication and control protocol . 116
14.2.1 General aspects. 116
14.2.2 Events and function elements relevant for the control of the state machines . 116
14.2.3 PSTN user port FSM, AN (PSTN port) and LE (PSTN port). 117
14.2.3.1 Description of the states. 117
14.2.3.2 Definition of port control states. 117
14.2.3.2.1 PSTN user port FSM - AN (PSTN port). 117
14.2.3.2.2 PSTN user port FSM - LE (PSTN port). 118
14.2.3.3 Principles and procedures. 118
14.2.3.3.1 General. 118
14.2.3.3.2 Blocking. 118
14.2.3.3.3 Blocking request . 118
14.2.3.3.4 Co-ordinated unblocking. 119
14.2.3.4 PSTN port FSM at the AN . 119
14.2.3.5 PSTN port FSM at the LE . 119
14.3 Interface L1 maintenance requirements and protocol . 120
14.3.1 Events and failure reports. 120
14.3.2 Detection algorithm for events and signals. 121
14.3.3 V5.1 interface L1 FSM. 121
14.3.4 Requirements and procedures for the additional functions. 122
14.4 Control protocol. 122
14.4.1 Control protocol message definition and content . 122
14.4.1.1 PORT CONTROL message. 123
14.4.1.2 PORT CONTROL ACK message . 123
14.4.1.3 COMMON CONTROL message. 124
14.4.1.4 COMMON CONTROL ACK message . 124
14.4.2 General message format and information eleme
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