Byte

Description

0, 1

Tag 0x275D

2, 3

Length Variable

4, 5

Value[0-1] Generic Command Response Length MSB, LSB

7

Value[1] Pulse Type

0x7f Pulsed normal polarity

0x7d Pulsed reversed polarity

0x7c Pulsed battery on c-wire

0x7b Pulsed on hook

0x7a Pulsed reduced battery

0x79 Pulsed no battery

0x78 Initial ring

0x77 Meter pulse

0x76 50 KHz Pulse

0x75 Register recall (timed loop open)

0x74 Pulsed off hook

0x73 Pulsed b wire connection to earth

0x72 Earth loop pulse

0x71 Pulsed b wire connected to battery

0x70 Pulsed a wire connected to battery

0x6f Pulsed c wire connection to earth

0x6e Pulsed c wire disconnected

0x6d Pulsed normal battery

0x6c Pulsed a wire disconnected

0x6b Pulsed b wire disconnected

0x50 Disable Autonomous response (defined here also
for illustration).

This value must be unique and should not be repeated in the steady signal's signal type field.

:

Value[2] Suppression indication

0x00 No suppression.

0x01 Suppression allowed by pre-defined V5.1 SIGNAL
message from LE

0x02 S Suppression allowed by pre-defined V5.1
message from TE

0x03 Suppression allowed by pre-defined V5.1 SIGNAL
message from LE or predefined line signal from TE

All other values are reserved.

:

Value[3] Pulse Duration Type

A predefined description, which consists of the time for the pulse in total and duty cycle.

Value[4] Acknowledgement Request Indicator

0x00 No acknowledge requested

0x01 Ending acknowledgement requested when finished
each pulse

0x02 Ending acknowledgement requested when finished
all pulse

0x03 Start of pulse acknowledgement requested

All other values are reserved.

Value[5] Number of Pulses

The number of pulses sent.

Value[6] Response

Used to enable/disable autonomous acknowledge message.

Use values as defined in Pulsed Type (in this TLV) and Steady Signal Type (in Steady-Signal TLV 0x275E).

The following values are also valid:

0x50 Disable autonomous response

0xFF Response not used