Paradyne 7112 User Manual download pdf (Page 86)

Configuration Option Tables

A-10

7112-A2-GB20-10March 1998

Table A-4. Data Port Options (3 of 3)

Network Init. Data Channel Loopback

Possible Settings: Disable, V.54, FT1, Both

Default Setting: Disable

Allows the initiation and termination of a Data Channel Loopback (V.54 loop 2) by the

receipt of a V.54 DCLB-actuate sequence or DCLB-release sequence from the network

or far-end device. The sequences may be either V.54 or FT1 (ANSI) compliant

sequences.

Disable – Ignores the DCLB-actuate and DCLB-release sequences for this port.

V.54 – Enables DCLB-actuate and DCLB-release sequences that comply with the

V.54 standard for ‘‘Inter-DCE signaling for point to point circuits.”

FT1 – Enables DCLB-actuate and DCLB-release sequences that comply with the ANSI

T1.403, Annex B standard for ‘‘In-band signaling for fractional-T1 (FT1) channel

loopbacks.”

Both – Enables DCLB-actuate and DCLB-release sequences that comply with either

the ANSI or V.54 standard. The type of actuate and release sequences do not have to

match.

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 the synchronous data

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 (CCITT 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 (CCITT 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.

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Paradyne 7112 User Manual Page 86