Introduction
1-6 3160-A2-GB21-80
March 1999
494-14564
PORT 2PORT 1CLOCK IN
PORT 4PORT 3
AUX PORT
COM PORT MODEM
DTE
POWER NETWORK

CAUTION:

AUX PORT OR COM PORT MUST NOT BE CONNECTED TO PSTN OR T1 NETWORK
NEC
CLASS 2
INPUT

Figure 1-5. 3164 DSU/CSU Rear Panel

495-14565-01
PORT 1
COM PORT MODEM
POWER NETWORK
CAUTION:
AUX PORT OR COM PORT MUST NOT BE CONNECTED TO PSTN OR T1 NETWORK
NEC
CLASS 2
INPUT

Figure 1-6. 3165 DSU/CSU Rear Panel