3. Configuration Options
3-20 December 2002 9000-A2-GB31-00
Network Initiated DCLB
Possible Settings: Disable, V.54_&_ANSI
Default Setting: V.54_&_ANSI
Allows the initiation and termination of the Data Channel Loopback (DCLB V.54 Loop 2) to
be controlled by the receipt of a DCLB-actuate or DCLB-release sequence (either V.54 or
FT1-ANSI compliant) from the network on the DS0s used for the network frame relay link.
When enabled and a DCLB-activate sequence is received, the unit initiates a DCLB on
the network interface. When a DCLB-release sequence is received, the DCLB is stopped.
Disable – DCLB-actuate and DCLB-release sequences are ignored.
V.54_&_ANSI – DCLB-actuate and DCLB-release sequences that comply with either V.54
or ANSI T1.403, Annex B standard will be recognized and will control initiation and
termination of a DCLB for the network frame relay link. The actuate and release
sequences do not need to match (for example, a DCLB started with a V.54 actuate
sequence can be stopped with an FT1 release sequence).
ANSI Performance Report Messages
Possible Settings: Enable, Disable
Default Setting: Disable
Specifies whether ANSI T1.403 compliance performance report messages (PRMs) are
generated and sent to the network over the ESF facility data link every second.
Display Conditions – This option only appears when Line Framing Format is set to
ESF.
Enable – Generates and sends PRMs.
Disable – Does not generate and send PRMs.

Table 3-7. T1 Network Physical Interface Options (3 of 4)