SDH网络保护倒换性能的测试

ITU-T Rec. G.704 (10/98) Synchronous frame structures used at 1544, 6312, 2048, 8448 and 44 736

kbit/s hierarchical levels

ITU-T Rec. G.706 (04/91) Frame alignment and cyclic redundancy check (CRC) procedures relating to basic

frame structures defined in Recommendation G.704

ITU-T Rec. G.707 (03/96) Network node interface for the synchronous digital hierarchy (SDH) ITU-T Rec. G.708 (06/99) Sub STM-0 network node interface for the synchronous digital hierarchy (SDH)

ITU-T Rec. G.711 (11/88) Pulse code modulation (PCM) of voice frequencies

ITU-T Rec. G.712 (11/96) Transmission performance characteristics of pulse code modulation channels ITU-T Rec. G.720 (07/95) Characterization of low-rate digital voice coder performance with non-voice

signals

ITU-T Rec. G.722 (11/88) 7 kHz audio-coding within 64 kbit/s

ITU-T Rec. G.722 Annex A (03/93) Testing signal-to-total distortion ratio for 7 kHz audio-codecs at 64

kbit/s Recommendation G.722 connected back-to-back

ITU-T Rec. G.722 Appendix 2 (03/87) Description of the digital test sequences for the verification of the

G.722 64 kbit/s SB-ADPCM 7 kHz codec

ITU-T Rec. G.722.1 (09/99) Coding at 24 and 32 kbit/s for hands-free operation in systems with low frame

loss

ITU-T Rec. G.723.1 (03/96) Dual rate speech coder for multimedia communications transmitting at 5.3 and

6.3 kbit/s

ITU-T Rec. G.724 (11/88) Characteristics of a 48-channel low bit rate encoding primary multiplex operating

at 1544 kbit/s

ITU-T Rec. G.725 (11/88) System aspects for the use of the 7 kHz audio codec within 64 kbit/s ITU-T Rec. G.726 (12/90) 40, 32, 24, 16 kbit/s adaptive differential pulse code modulation (ADPCM) ITU-T Rec. G.726 Annex A (11/94) Extensions of Recommendation G.726 for use with uniform-quantized

input and output

ITU-T Rec. G.726 Appendix 2 (03/91) Test Vectors - Description of the digital test sequences for the

verification of the G.726 40, 32, 24 and 16 kbit/s ADPCM algorithm ITU-T Rec. G.726 Appendix 3 (05/94) Comparison of ADPCM algorithms

ITU-T Rec. G.727 (12/90) 5-, 4-, 3- and 2-bits/sample embedded adaptive differential pulse code

modulation (ADPCM)

ITU-T Rec. G.727 Annex A (11/94) Extensions of Recommendation G.727 for use with uniform-quantized

input and output

ITU-T Rec. G.727 Appendix 1 (03/91) Description of the digital test sequences for the verification of the

G.727 5 , 4 , 3 and 2 bit/sample embedded ADPCM algorithm ITU-T Rec. G.727 Appendix 2 (05/94) Comparison of ADPCM algorithms

ITU-T Rec. G.728 (09/92) Coding of speech at 16 kbit/s using low-delay code excited linear prediction

ITU-T Rec. G.728 Annex G (11/94) 16 kbit/s fixed point specification

ITU-T Rec. G.728 Annex H (05/99) Variable bit rate LD-CELP operation mainly for DCME at rates less than

16 kbit/s

ITU-T Rec. G.728 Annex I (05/99) Coding of speech at 16 kbit/s using low-delay code excited linear

prediction - Annex I: Fram

ITU-T Rec. G.728 Appendix 1 (07/95) Programs and test sequences for implementation verification of the

algorithm of the G.728 16 kbit/s LD-CELP speech coder ITU-T Rec. G.728 Appendix 2 (11/95) Speech performance

ITU-T Rec. G.729 (03/96) Coding of speech at 8 kbit/s using conjugate-structure algebraic-code-excited

linear-prediction

ITU-T Rec. G.729 Annex A (11/96) Reduced complexity 8 kbit/s CS-ACELP speech codec ITU-T Rec. G.729 Annex B (11/96) A silence compression scheme for G.729 optimized for terminals

conforming to Recommendation V.70

ITU-T Rec. G.729 Annex C (09/98) CODING OF SPEECH AT 8 kbit/s USING CONJUGATE-STRUCTURE

ALGEBRAIC-CODE-EXCITED-LINEAR-PREDICTIO

ITU-T Rec. G.729 Annex D (09/98) CODING OF SPEECH AT 8 kbit/s USING CONJUGATE-STRUCTURE

ALGEBRAIC-CODE-EXCITED LINEAR-PREDICTION

ITU-T Rec. G.729 Annex E (09/98) CODING OF SPEECH AT 8 kbit/s USING CONJUGATE-STRUCTURE

ALGEBRAIC-CODE-EXCITED LINEAR-PREDICTIO

ITU-T Rec. G.731 (11/88) Primary PCM multiplex equipment for voice frequencies

ITU-T Rec. G.732 (11/88) Characteristics of primary PCM multiplex equipment operating at 2048 kbit/s ITU-T Rec. G.733 (11/88) Characteristics of primary PCM multiplex equipment operating at 1544 kbit/s ITU-T Rec. G.734 (11/88) Characteristics of synchronous digital multiplex equipment operating at 1544

kbit/s

ITU-T Rec. G.735 (11/88) Characteristics of primary PCM multiplex equipment operating at 2048 kbit/s and

offering synchronous digital access at 384 kbit/s and/or 64 kbit/s

ITU-T Rec. G.736 (03/93) Characteristics of a synchronous digital multiplex equipment operating at 2048

kbit/s

ITU-T Rec. G.737 (11/88) Characteristics of an external access equipment operating at 2048 kbit/s offering

synchronous digital access at 384 kbit/s and/or 64 kbit/s

ITU-T Rec. G.738 (11/88) Characteristics of primary PCM multiplex equipment operating at 2048 kbit/s and

offering synchronous digital access at 320 kbit/s and/or 64 kbit/s

ITU-T Rec. G.739 (11/88) Characteristics of an external access equipment operating at 2048 kbit/s offering

synchronous digital access at 320 kbit/s and/or 64 kbit/s

ITU-T Rec. G.741 (11/88) General considerations on second order multiplex equipments ITU-T Rec. G.742 (11/88) Second order digital multiplex equipment operating at 8448 kbit/s and using

positive justification

ITU-T Rec. G.743 (11/88) Second order digital multiplex equipment operating at 6312 kbit/s and using

positive justification

ITU-T Rec. G.744 (11/88) Second order PCM multiplex equipment operating at 8448 kbit/s ITU-T Rec. G.745 (11/88) Second order digital multiplex equipment operating at 8448 kbit/s and using

positive/zero/negative justification

ITU-T Rec. G.746 (10/84) Characteristics of second order PCM multiplex equipment operating at 6312

kbit/s

ITU-T Rec. G.747 (11/88) Second order digital multiplex equipment operating at 6312 kbit/s and

multiplexing three tributaries at 2048 kbit/s

ITU-T Rec. G.751 (11/88) Digital multiplex equipments operating at the third order bit rate of 34 368

kbit/s and the fourth order bit rate of 139 264 kbit/s and using positive justification

ITU-T Rec. G.752 (11/80) Characteristics of digital multiplex equipments based on a second order bit rate

of 6312 kbit/s and using positive justification

ITU-T Rec. G.753 (11/88) Third order digital multiplex equipment operating at 34 368 kbit/s and using

positive/zero/negative justification

ITU-T Rec. G.754 (11/88) Fourth order digital multiplex equipment operating at 139 264 kbit/s and using

positive/zero/negative justification

ITU-T Rec. G.755 (11/88) Digital multiplex equipment operating at 139 264 kbit/s and multiplexing three

tributaries at 44 736 kbit/s

ITU-T Rec. G.761 (11/88) General characteristics of a 60-channel transcoder equipment ITU-T Rec. G.762 (11/88) General characteristics of a 48-channel transcoder equipment

ITU-T Rec. G.763 (10/98) Digital circuit multiplication equipment using G.726 ADPCM and digital speech

interpolation

ITU-T Rec. G.764 (12/90) Voice packetization - Packetized voice protocols

ITU-T Rec. G.764 Appendix 1 (11/95) Packetization guide ITU-T Rec. G.765 (09/92) Packet circuit multiplication equipment

ITU-T Rec. G.765 Appendix 1 (11/95) A guide to PCME

ITU-T Rec. G.766 (11/96) Facsimile demodulation/remodulation for digital circuit multiplication equipment ITU-T Rec. G.767 (10/98) Digital circuit multiplication equipment using 16 kbit/s LD-CELP, digital speech

interpolation and facsimile demodulation/remodulation

ITU-T Rec. G.772 (03/93) Protected monitoring points provided on digital transmission systems ITU-T Rec. G.773 (03/93) Protocol suites for Q-interfaces for management of transmission systems

ITU-T Rec. G.774 Cor 1 (11/96)

ITU-T Rec. G.774 (09/92) Synchronous digital hierarchy (SDH) management information model for the

network element view

ITU-T Rec. G.774.01 Corrigendum 1 (11/96) SYNCHRONOUS DIGITAL HIERARCHY [SDH]

PERFORMANCE

MONITORING FOR THE NETWORK ELEMENT VIE

ITU-T Rec. G.774.01 (11/94) Synchronous Digital Hierarchy (SDH) performance monitoring for the network

element view

ITU-T Rec. G.774.02 Corrigendum 1 (11/96) SYNCHRONOUS DIGITAL HIERARCHY [SDH]

CONFIGURATION OF

THE PAYLOAD STRUCTURE FOR THE NET

ITU-T Rec. G.774.02 (11/94) Synchronous digital hierarchy (SDH) configuration of the payload structure for

the network element view

ITU-T Rec. G.774.03 Corrigendum 1 (11/96) SYNCHRONOUS DIGITAL HIERARCHY [SDH]

MANAGEMENT OF