Byte

Description

0, 1

Tag 0x275E

2, 3

Length Variable

5

Value[0] Steady Signal Type

0x00 Normal polarity

0x01 Reversed polarity

0x02 Battery on C wire

0x03 No battery on C wire

0x04 Off hook (loop closed)

0x05 On hook (loop open)

0x06 Battery on A wire

0x07 A wire on earth

0x08 No battery on A wire

0x09 No battery on B wire

0x0a Reduced battery

0x0b No battery

0x0c Alternate reduced power/ no power

0x0d Normal battery

0x0e Stop ringing

0x0f Start pilot frequency

0x10 Stop pilot frequency

0x11 Low impedance on B wire

0x12 B wire connected to earth

0x13 B wire disconnected from earth

0x14 Battery on B wire

0x15 Low loop impedance

0x16 High loop impedance

0x17 Anomalous loop impedance

0x18 A wire disconnected from earth

0x19 C wire on earth

0x1a C wire disconnected from earth

0x50 Disable Autonomous response

Before adding the new value, this value should be unique and should not be repeated in the Pulsed Signal's Signal Type field.

All the other values are reserved.

Value[1] 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