NTD12 Dual-port DTI/PRI card description and installation
Page 103 of 188
ISDN PRI Installation
Table 27 - DCHI/MSDL Receiver Ready control signals
RR State
Condition
ON
D-Channel data rate selected at 64 Kbps or 56 Kbps or 64
Kbps inverted
and
PRI loop is enabled
and
PRI link is not in RED alarm mode state
and
PRI link is not transmitting a yellow alarm pattern
and
PRI link is not receiving a Remote Alarm Indication from the
remote facility
and
PRI link is not in FA3 mode
and
Transmitter Ready (TR) control signal from the DCHI/MSDL
is ON
OFF
All other conditions