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As shown in Figure 111, if you set the Port Mode to Structured Voice, you can set
additional trunk conditioning (TC) parameters on the CBR Port Configuration
menu.
Figure 111 CBR E1 Port Configuration Menu (Structured Voice Mode)
4 Set the following port configuration parameters.
LBO (T1-DSX only) — Line Build Out. LBO refers to the signal
generation/regeneration of the distance between the PathBuilder S330/S310 and
the next crossconnect of FOTs (Fiber Optic Terminal system), in feet: 1-100,
100-200, 200-300, 300-400, 400-500 or 500-600.
Line Code (T1-DSX only) — The zero code suppression technique configured to
the CBR T1-DSX port. Set this parameter to match the service provider or device
connection line coding. The default is B8ZS. The Line Code must match at local
and remote ports.
AMI — Alternate mark inversion; a T1 (1.544 Mbps) carrier line coding format
whereby successive ones (marks) are alternately inverted.
B8ZS — Binary 8 Zero Substitution; a T1 (1.544Mbps) carrier line coding
format used to accommodate "ones density" for clear channel transmission.
The Line Code for CBR E1 ports is a read-only parameter and is always set to
HDB3.
Port Mode — The type of service configured to the specified port:
Both Structured Data and Structured Voice modes allow end to end DS0
connectivity.
For PRI (Primary Rate Interface) signaling, you must set the Port Mode to
Structured Voice.
Configuring the CBR Module
117
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