Configuring the CBR Module 123
As shown in Figure 95, if you set the Port Mode to Structured Voice, you can set
additional trunk conditioning (TC) parameters on the CBR Port Configuration
menu.
Figure 95 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.
Structured Data — Structured service provides N x 64 kbit/second capability,
where N ranges between 1 and the maximum number of available DS0
channels. Structured data service passes traffic with signaling information
disabled—it provides for DS0 midspan carrier access without A & B signaling
bits terminating DS1 or E1 framing at the CBR T1-DSX or CBR E1 interface.
