Standards Supported - Siemens HiPath 3000 Service Manual

13.2.3

Standards Supported

HiPath 3000/5000 V5.0 supports the standards listed in the following table.
Table 13-1 Standards Supported
Standard
G.711 ITU standard for voice
codecs
G.722 High-quality voice co-
dec
G.723.1 ITU standard for voice
codecs
G.729 Group of ITU stan-
dards for voice codecs
G.729A ITU standard for voice
codecs, based on
G.729
G.729AB ITU standard for voice
codecs, based on
G.729A
T.38 ITU standard for fax
transmission (Realtime
FAX)
1 The bandwidth actually required in the LAN, for example, may be considerably higher. Here are some relevant factors:
– Data Link Layer used: Ethernet (with or without VLAN), PPP, Frame Relay ...
– Protocols with/without compression: RTP, UDP, IP
– Security: VPN tunnel ...
– Redundancy: For example T.38
– Packaging: the number of samples that are transported per package.
"Clear Channel" transmission mode is characterized by the fact that signals are transmitted dig-
itally and the connection is bit-transparent. There is no compression. The transmission rate is
64 Kbps.
P31003-H3550-S403-4-7620, 02/05
HiPath 3000 V5.0, HiPath 5000 V5.0, Service Manual
Transmission
1
rate
64 Kbps ISDN voice quality
48, 56 or Better voice quality than G.711
64 Kbps
5.3 or 6.3 Kbps Adequate voice quality
8 Kbps Less delay and better voice quality than
G.723.1
8 Kbps Less delay and better voice quality than
G.723.1
8 Kbps Less delay and better voice quality than
G.723.1
14 Kbps Governs communication from group 3
fax devices over IP networks
IP Fundamentals
IP Network Requirements
Notes
ip_.fm
13-3