Paradyne 7974 Installation Instructions Manual page 15

Table 3. Synchronous Data Port Options – Model 7975 (2 of 2)
Send All Ones on Data Port Not Ready
Possible Settings: Both, Disable, DTR, RTS
Default Setting: Both
Specifies the conditions on the data port that determine when valid data is not being
sent from the DTE. When this condition is detected, all ones are sent to the network.
NOTE: Set Send All Ones on Data Port Not Ready to RTS or Disable if X.21 is
selected for Port Type.
Action on Network LOS Alarm
Possible Settings: Halt, None
Default Setting: Halt
Specifies the action taken on the synchronous data port when an LOS (Loss Of
Signal) alarm is received on the network interface.
Network Initiated Data Channel Loopback
Possible Settings: Disable, Enable
Default Setting: Disable
Allows the initiation and termination of a Data Channel Loopback (DCLB) by the
receipt of a DCLB-actuate sequence or DCLB-release sequence from the network or
far-end device.
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.
ElasticStore
Possible Settings: Disable, Enable
Default Setting: Enable
When configured as the LTU, used to enable or disable a 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.
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