ZyXEL Communications X6004 User Manual page 138

Chapter 6 Server
Table 25 Server > PRI Configuration (continued)
LABEL
NT/TE Mode
Q.SIG Type
LineBuildOut
Framing
138
DESCRIPTION
Select NT (Network Terminal) if a TE device (for example, an ISDN
phone) connects to the specified port. Select TE (Terminal Equipment)
if this port connects to a NT device (for example, a PBX). See
page 127 for more information.
Select the role of a PRI interface in an ISDN Q.SIG network (Master or
Slave) and the method to avoid channel collision (SIDE A or SIDE B).
The setting is only available for the switch type Q.SIG.
This specifies the transmission and receiving levels to cable length.
Depending on a T1 or E1 line the port is connected to, you have the
following options.
T1: You can select one of the following options based on the necessary
transmission/receiving level (using CSU) or possible cable distance your
estimated between two PRI peers (using DSX).
CSU 0 = 0 dB
CSU 75 = 7.5 dB
CSU 15 = 15 dB
CSU 225 = 22.5 dB
DSX 110 = 0~110 ft.
DSX 220 = 110~220 ft.
DSX 330 = 220~330 ft.
DSX 440 = 330~440 ft.
DSX 550 = 440~550 ft.
DSX 660 = 550~660 ft.
E1: Select one of the following options based on the possible cable
distance your estimated between two PRI peers.
120 = 120 ft.
This is a type of framing which decides the way to align framing
channels. You have to configure same framing type in both connected
PRI devices.
Depending on a T1 or E1 line the port is connected to, you have the
following options.
T1: SF (Super Frame), ESF (Extended Super Frame).
E1: CRC4 (Cyclic Redundancy Check 4), NonCRC4 (None Cyclic
Redundancy Check 4).
NT/TE on
X6004 User's Guide