Filter
Top Products
Introduction
24 4600 Series IP Telephone LAN Administrator Guide
ITU Documents
The following documents are available for a fee from the ITU Web site: http://www.itu.int.
● Recommendation G.711, Pulse Code Modulation (PCM) of Voice Frequencies,
November 1988
● Recommendations G.726: 40, 32, 24, 16 kbit/s Adaptive Differential Pulse Code
Modulation (ADPCM), December 1990
● G.726 Appendix II, Digital test sequences for the verification of the G.726 40, 32, 24 and 16
kbit/s ADPCM, March 1991
● G.726 Appendix III, comparison of ADPCM algorithms, May 1994
● G.726 Annex A, Extensions of Recommendation G.726 for use with uniform-quantized
input and output, November 1994
● G.726 Annex B, Packet format capability identifier and capability parameters for H.245
signaling, July 2003
● Recommendation G.729, Coding of speech at 8 kbit/s using Conjugate-Structure
Algebraic-Code-Excited Linear-Prediction (CS-ACELP), March 1996
● Annex A to Recommendation G.729: Reduced complexity 8 kbit/s CS-ACELP speech
codec, November 1996
● Annex B to Recommendation G.729: A silence compression scheme for G.729 optimized
for terminals conforming to Recommendation V.70, November 1996
● Recommendation H.225.0, Call signalling protocols and media stream packetization for
packet-based multimedia communications systems, February 1998
● Recommendation H.245, Control protocol for multimedia communication, February 1998
● Recommendation H.323, Packet-based multimedia communications systems, February
1998