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RAD Data comm HCD-E1 User Manual

Page 104

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Chapter 4 - Control from the Supervisory Port

HCD-E1

Installation & Operation Manual

4-20

HCD-E1 Command Set Description

11/01/00 19:23

FRAME_MODE

MULTIPLIER

MAP_TYPE

SPEED

START_TS

CTS

FIFO_SIZE

FRAMED

64

USER

NC

N/A

ON

AUTO

2. Change the desired parameters (using spacebar to move between them

and pressing F or B to increase or decrease their value) and press
to move to the next line. HCD-E1 displays the second line of the
channel parameters data form. A typical form is shown below:

CLOCK_MODE

ETHERNET_MODE

BRIDGING

DCE

N/A

N/A

Note

If the FRAME_MODE field shows N/A, it means that the sublink or the other

channel is in UNFRAMED mode and all the 32 HDSL timeslots are assigned to

it.

The following table lists the available user port configuration parameters and
their functions. The table also lists the parameter values included in the
default configuration of the channel. For configuration guidelines, refer to
Table 3-5 in Chapter 3.

Designation

Function

Values

FRAME_MODE Selects a framed or unframed

mode of HDSL framer

FRAMED

HDSL framer is in the framed mode

UNFRAMED

Allows transfer of unframed 2048 kbps
data streams, if you have an E1 port at the
far end of the HDSL link

Default:

FRAMED

Note: It is recommended to select FRAMED unless your application does not explicitly need the unframed mode.
MULTIPLIER

Selects the basic data rate per
HDSL timeslot

64K

Basic data rate is 64 kbps

56K

Basic data rate is 56 kbps

Default: 64

MAP_TYPE

Selects the time slot allocation
method used for mapping user's
data into the time slots of the
HDSL signal

USER Free user selection of time slots
SEQ

Sequential allocation of time slots, starting
from a user-specified slot (defined under
START_TS).

ALT

Alternate allocation of time slots. This selection
means that starting from a specified slot, the slot
allocation, defined under START_TS, looks like
this: DATA NC DATA NC DATA, etc.

Default: USER

SPEED

Selects the channel payload
data rate.

Available data rates are multiples of the basic rate (56 or
64 kbps). The multiples are in the range of 1 to 32,
resulting in rates of 56, 112, ..., 1736 kbps or 64, 128, 192,
..., 1984 kbps, respectively. When working in UNFRAMED
mode, the data rate must be 1792 or 2048 kbps for basic
rates 56 kbps or 64 kbps, respectively.
Default:

NC