Filter
Top Products
3. Configuration Options
3-36 December 2002 9000-A2-GB31-00
EIA-530-A/X.21/V.35 Data Port Physical Interface
FrameSaver Models 9788, 9820-2M, and 9820-8M have an EIA-530-A data port
that can be adapted for use as an X.21 or V.35 data port.
Network Initiated Data Channel Loopback (9128)
Possible Settings: Disable, V.54, ANSI_FT1, V.54_&_ANSI
Default Setting: Disable
Allows the initiation and termination of the Data Channel Loopback (V.54 Loop 2) to be
controlled by the receipt of a DCLB-actuate and DCLB-release sequence (either V.54, or
FT1 [ANSI] compliant sequences) from the network or far end unit. When this
configuration is enabled (V.54, FT1, or Both), receiving a DCLB-actuate sequence on a
particular port causes the unit to initiate a DCLB on that port (provided that a DCLB can be
performed based on the current state of the port and unit). Receiving a DCLB-release
sequence terminates the DCLB.
Display Conditions – This option only appears for Port-2 on a FrameSaver SLV 9128,
when Port Use is set to Synchronous Data.
Disable – Ignores the DCLB-actuate and DCLB-release for the port.
V.54 – DCLB-actuate and DCLB-release sequences that comply with the V.54 standard
for “inter-DCE signaling for point-to-point circuits” are recognized and will control the
initiation and termination of a DCLB (V.54 Loop 2) for the port.
ANSI_FT1 – DCLB-actuate and DCLB-release sequences that comply with either the
ANSI.403, Annex B standard for “in-band signaling for fractional T1 (FT1) channel
loopbacks” are recognized and will control the initiation and termination of a DCLB for the
port.
V.54_&_ANSI – DCLB-actuate and DCLB-release sequences that comply with either the
ANSI or V.54 standard are recognized and will control the initiation and termination of a
DCLB for the port.
Table 3-15. V.35 Data Port Physical Interface Options (6 of 6)
Table 3-16. EIA-530-A/X.21/V.35 Data Port Physical Interface Options (1 of 3)
Port Type
Possible Settings: E530, V.35, X.21
Default Setting: V.35
Specifies the port type of the data port.
E530 – The port is configured as an EIA-530-A-compatible DCE. An EIA-530-A-
compatible DTE may be directly connected to the DB25 connector for the port.
V.35 – The port is configured as a V.35-compatible DCE. A V.35-compatible DTE may be
connected to the port using a DB25-to-MS34 adapter.
X.21 – The port is configured as an X.21-compatible DCE. An X.21-compatible DTE may
be connected to the port using a DB25-to-DB15 adapter.