zxAnEmIfType

This variable represents the EM interface type.
The values mean:
em-type-I
    This is the most common interface in North America. Type I uses two leads for supervisor signaling: E and M. During inactivity, the E-lead is open and the M-lead is connected to the ground. The Trunk Circuit Side connects the M-lead to the battery in order to indicate the off-hook condition. The Signaling Unit connect the E-lead to the ground in order to indicate the off-hook condition.
em-type-V
    Type V is symmetrical and allows two signaling nodes to be connected back-to-back. This is the most common interface type used outside of North America. Type V uses two leads for supervisor signaling: E and M. During inactivity the E-lead and M-lead are open. The Trunk Circuit connects the M-lead to the ground in order to indicate the off-hook condition. The signaling Unit connects the E-lead to the ground in order to indicate off-hook condition.

MIB

ZTE-AN-VOICE-TRUNK-MIB

OID

.1.3.6.1.4.1.3902.1015.5200.3.11.1.1.5

Type

column

Access

readwrite

Status

current

Parent

zxAnEmCfgEntry