Carrier Access Access Bank II SNMP - Manual (Page 51)

5-4 9/24/01
5.3.5 Tip & Ring Jack (female)
Tip & Ring connections are made at this connector with an standard 25-pair telephone cable, which
also connects to the punch-down block or RJ-11 “Harmonica.”
Note: 4-wire E&M 12-channel voice card requires optional cables to connect to
the punch-down block. These cables eliminate the use of the front panel RJ-21X Tip
& Ring telephone connector.
5.4 Connecting the Voice Circuits
Voice circuit connections are made at the 50-pin Amphenol  jack labeled Tip & Ring on the Access
Bank II SNMP Control Panel (see Figure 5-1). You will need a standard 25-pair telephone cable with
RJ-21X wiring and a D-type mating connector at the Access Bank II SNMP end. The other end con-
nects to either a punch down block or an RJ-11 “Harmonica” for interfacing to analog telephony
equipment.
To connect the voice circuits:
1. Connect the telephone cable to the punch-down block or RJ-11 “Harmonica.”
2. Route the cable to the Access Bank II SNMP Control Panel.
3. Remove any screws in the D-type connector that may prevent a flush connection with the Tip
& Ring jack.
4. Connect the D-type mating connector to the Tip & Ring connector on the Control Panel.
5. Cinch down the attached Velcro strap to retain the connectors.
6. Use the cable tie down on the unit and elsewhere to avoid accidental disconnection.
Note: If you are connecting an external alarm, note in Table 5-2 that pair 25 of the
voice drop cable provides a connection to a set of normally open relay contacts (150
Vrms, 150 mA maximum load) that close when the Access Bank II SNMP enters an
alarm state. For more information on external alarm events, see the Remote Monitor
section of this manual and the separate Remote Monitor User’s Guide.
Table 5-2 defines the pin functions on the 50-pin Amphenol-type Tip & Ring jack.