4-Port Ds3 Sparing Panel Nthr79 - Nortel Passport 15000 Hardware Description

304 Chapter 5 Termination panels for FPs

4-port DS3 sparing panel NTHR79

241-1501-200 5.2S2
The 4-port DS3 sparing panel NTHR79 provides one-for-one sparing for
these FPs
• NTHR31, the "4-port DS3Ch ATM FP with IMA" (page 175)
• NTHR91, the "4-port DS3Ch FP with AAL1 CES" (page 180)
In addition to the sparing panel information provided in "Basic functionality
and operation of a sparing panel" (page 292), the NTHR79 has the following
distinguishing characteristics.
The NTHR79 is a Class B device for electromagnetic interference (EMI).
The NTHR79 can be used as a patch panel without sparing (like a one-for-one
fanout panel) for one DS3 card provided the signaling and control port cables
are connected to the respective Main ports on the sparing panel.
The faceplate has standard female BNC connectors for the signaling ports and
female DB9 connectors for the control ports. The monitor ports are also
75-ohm BNC connectors. See the figure "A 4-port DS3 one-for-one 19-inch
sparing panel NTHR79" (page 305).
To facilitate more effective cable management, the faceplate includes spaces
for writing port connection information.
The size of the panel is in the table "Dimensions of fanout and sparing panels"
(page 313).