Beta Draft Confidential
18-121/19/05 ATM Services Configuration Guide for CBX 3500, CBX 500, GX 550, and B-STDX 9000
Configuring SPVCs
Defining a Point-to-Point Offnet Circuit Connection
Table 18-4. Add OffNet Circuits: Administrative Tab Fields
Field Action/Description
Circuit Name  Enter any unique, alphanumeric name to identify the Offnet circuit. Do 
not use parentheses and asterisks. 
Circuit Alias 
Name
(Optional) The circuit alias is used by service providers to identify the 
circuit in a way that is meaningful to their customers. This option is 
often used in conjunction with NavisXtend Report Generator.
Enter any unique, alphanumeric name to identify the Offnet circuit. Do 
not use parentheses and asterisks. This name must be unique to the entire 
map.
Admin Status  Up – Choose this button (default) to activate the circuit at switch startup.
Down – Choose this button if you do not want to activate the circuit at 
switch startup.
Circuit Type
(ATM-to-ATM 
only)
Specify whether the circuit is a VPC or VCC (default). 
VPC – Choose this button for the VCI field to be set to zero (0). It cannot 
be changed. A VPC enables a network that interfaces with an OPTimum 
trunk to accept circuits with this VPI and any of its valid VCIs.
VCC – Choose this button to accept the default of this circuit being a 
VCC.
Endpoint 1 
Connection ID
VPI (0-15) – For ATM UNI endpoints only, enter a value from 0 – nnnn 
to represent the VPI for the Offnet PVC. The maximum value you can 
enter is based on the Valid Bits in VPI that is configured for the logical 
port. Note that zero (0) is not a valid value for a management PVC. 
VCI (32-1023) – For ATM UNI endpoints only, enter a value to represent 
the VCI for the Offnet PVC. 
DLCI – (Frame Relay UNI endpoints only) If applicable, displays the 
data link connection identifier (DLCI), a 10-bit address that identifies 
PVCs. The DLCIs identify the logical end points of a virtual circuit and 
only have local significance.