Nortel Networks NN43001-314 - Manual (Page 377)

Calculations 377
Bandwidth requirements
Bandwidth requirements in this section refer to the information in Table 42
"Full Duplex Ethernet bandwidth for one channel (one Erlang)" (page 377) ,
Table 43 "Traffic capacity at P.01, P.005, and P.001 GOS" (page 377) , and
Table 44 "LAN/WAN bandwidth for one channel (one Erlang)" (page 377) .
Table 42
Full Duplex Ethernet bandwidth for one channel (one Erlang)
CODEC Payload Full Duplex Ethernet
G.711 10 ms 126 kbit/s
G.711 20 ms 95 kbit/s
G.711 30 ms 85 kbit/s
G.729A 10 ms 70 kbit/s
G.729A 20 ms 39 kbit/s
G.729A 30 ms 29 kbit/s
Table 43
Traffic capacity at P.01, P.005, and P.001 GOS
Device P.01 P.005 P.001
MC (32-port) 794 CCS 744 CCS 655 CCS
T1 (24 ports) 550 CCS 511 CCS 441 CCS
E1 (30 ports) 732 CCS 685 CCS 600 CCS
Table 44
LAN/WAN bandwidth for one channel (one Erlang)
CODEC Payload LAN/WAN
G.711 10 ms 48 kbit/s
G.711 20 ms 40 kbit/s
G.711 30 ms 37 kbit/s
G.729A 10 ms 20 kbit/s
G.729A 20 ms 12 kbit/s
G.729A 30 ms 9 kbit/s
Procedure 49
Calculating TLAN subnet bandwidth for IP Phone traffic
Step Action
Incremental bandwidth required on the TLAN subnet to carry given voice
traffic:
Nortel Communication Server 1000
Branch Office Installation and Commissioning
NN43001-314 01.02 Standard
Release 5.0 20 June 2007
Copyright © 2007, Nortel Networks
.