G.723.1 (5.3 kbit/s or 6.3 kbit/s), Security passwords – Nortel Networks NN43001-563 User Manual

Page 85

Security passwords

G.723.1 (5.3 kbit/s or 6.3 kbit/s)

The G.723.1 codec provides the greatest compression. Voice Activity
Detection/Silence Suppression is configurable through TM 3.1. An
ITG-Pentium 24-port trunk card supports 24 channels per card with
G.723.1. A Media Card 32-port trunk card supports 32 channels per card
with G.723.1.

Three downloadable DSP profiles support the codecs shown in

Table 9

"Codecs supported by IP Trunk 3.01 (and later)" (page 85)

Table 9
Codecs supported by IP Trunk 3.01 (and later)

Profile 1
32 ms. Echo Cancel Tail
24 ports/card for ITG-P
24-port card
32 ports/card for SMC
32-port card

Profile 2
32 ms. Echo Cancel Tail
24 ports/card for ITG-P
24-port card
32 ports/card for SMC
32-port card

Profile 3
32 ms. Echo Cancel Tail
16 ports/card for ITG-P
24-port card
Not supported for SMC
32-port card

PCM A-law (G.711)

PCM µ-law (G.711)

G.729AB

G.723.1 5.3 kbit/s

G.729B

Clear Channel

G.723.1 6.3 kbit/s

Clear Channel

Fax

Clear Channel

Fax

Each codec supports one of three sets of parameters: one for DSP, one
for fax, and one for codec.

WARNING

The Media Card 32-port trunk card does not support Profile 3.

Security passwords

When Telneting into the ELAN network interface or using the debug port,
a password must be entered when prompted. Two levels of passwords
are used to prevent unauthorized data access. Unauthorized data access
occurs when an unauthorized individual is able to view or modify confidential
data, such as employee lists, password lists, and electronic mail. This
information can be used to bypass Direct Inward System Access (DISA)
restrictions and avoid charges.

Nortel Communication Server 1000

IP Trunk Fundamentals

NN43001-563

01.01

Standard

Release 5.0

30 May 2007