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Vmux-2100 Installation and Operation Manual Chapter 4 Management from a Terminal
Configuring Main Link and Voice E1/T1 Ports 4-23
Main Link 1 or Main Link 2
1. Connect > (Yes)
2. Clock Source> (Lbt (Local))
3. Frame > (Esf)
4. Interface Type> (Csu))
5. Line Code> (B8ZS)
6. Rx Sensitivity> (LOW (-30dB))
7. Tx Gain Level> (0 dBm)
8. Restoration Time> (1 Second (Fast))
9. Idle Code [0 - ff]... (68)
@ - Db Update; # - Db Undo
ESC-prev.menu; !-main menu; &-exit
Figure 4-27. Main Link 1/2 Menu for T1 Port Module
• Frame (T1 framing mode):
Esf (24 frames per multiframe)
SF (D4) (12 frames per multiframe).
• Interface Type:
DSU (DSU interface)
CSU (CSU interface).
• Line Code (line code and zero suppression method used by the port):
B8ZS (B8ZS coding).
• Rx Sensitivity (CSU mode only, maximum attenuation of the Rx signal that can
be compensated for by the port Rx path, to obtain BER performance required
by the standards):
Low (-30 dB) (-30 dB relative to the nominal transmit level of 0 dB)
High (-36 dB) (-36 dB relative to the nominal transmit level of 0 dB).
• Tx Gain Level (CSU mode only, relative T1 output transmit level):
0 dB (no attenuation)
7.5 dB (attenuation of 7.5 dB relative to the nominal transmit level)
15 dB (attenuation of 15 dB relative to the nominal transmit level)
22.5 dB (attenuation of 22.5 dB relative to the nominal transmit level)
• Line Length (DSU mode only, length of a cable in feet between the
Vmux-2100 T1 port connector and the network access point):
0–133 Feet
133–266 Feet