Paradyne Hotwire 8775 User Manual page 76

A. Configuration Options
Table A-2. Synchronous Data Port Options (3 of 3)
A-6
Port (DTE) Initiated Loopbacks
Possible Settings: Disable, DTLB, DCLB, Both
Default Setting: Disable
Allows the initiation and termination of a local Data Terminal Loopback (DTLB) or remote
Data Channel Loopback (DCLB) by the DTE connected to this port. (DTLB is equivalent to
a V.54 loop 3, and DCLB is equivalent to a V.54 loop 2.) Control of these loopbacks is
through the DTE interchange circuits as specified by the V.54 standard.
Disable – Disables control of local DTLBs and remote DCLBs by the DTE connected
to this port.
DTLB – Gives control of the local DTLBs for this port to the DTE attached to this port. This
loopback is controlled by the Local Loopback interchange circuit LL (ITU-T 141).
DCLB – Gives control of the remote DCLBs for the far-end port connected to this port
to the DTE attached to this port. This loopback is controlled by the Remote Loopback
interchange circuit RL (ITU-T 140). The far-end equipment must support in-band
V.54 loopbacks.
Both – Gives control of local DTLBs and remote DCLBs to the DTE connected to
this port.
Elastic Store
Possible Settings: Disable, Enable
Default Setting: Enable
Used to enable or disable the first-in, first-out (FIFO) buffer circuit for the incoming
external clock. This circuit is used to compensate for the differences between the
frequencies of the data clocks for the two units in the circuit. This option only applies if the
unit is set for external timing. Do not enable Elastic Store if the attached DCE has an
elastic store buffer larger than 32 bits.
Disable – Disables the Elastic Store FIFO.
Enable – Enables the Elastic Store FIFO.
February 2001 8700-A2-GB25-10