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Table 3:
Synchronous Data Port Options – Model 7995 (2 of 2)
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.
Elastic Store
Possible Settings: Disable, Enable
Default Setting: Enable
When configured as the STU-C and Transmit Clock Source is set to External, 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. Do not enable Elastic Store if the attached DCE has an elastic store buffer
larger than 32 bits.
Table 4:
G.703 Interface Options – Model 7996 (1 of 2)
Framing
Possible Settings: Framed, Unframed
Default Setting: Framed
Specifies whether G.704 framing is used for the G.703 interface.
Line Coding
Possible Settings: AMI, HDB3
Default Setting: HDB3
Specifies the line coding format to be used by the G.703 interface.
Line Framing
Possible Settings: CRC4, noCRC4
Default Setting: noCRC4
Specifies the framing format to be used by the G.703 interface.
16
Hotwire TDM SHDSL Endpoints
7990-A2-ZN10-30
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