0x275D Pulsed-Signal
(Interworking Only)

Use this TLV to respond to generic command. The response code should be same as the command code to confirm the command (though not required).

Used in:
0x0033 NPDI Universal ICB

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

Tag-Length-Value block. A standardized block that allows data to inserted in a standard way into API messages.
Network Protocol Data Intelligence. Also called “Interworking,” it is a software product that operates within Excel’s Call Control (Layer 4) and Services (Layer 5) call processing layers. NPDI is meant to enhance Excel’s call processing product offering by allowing call processing layers (specifically Layers 4 and 5) to perform advanced analysis, generation, and conversion of Network Signaling (NS) Layer 3 information.
See Information Control Block.
Most Significant Bit
Least Significant Bit