Avaya CMC1 Installation Manual page 118

Installing and Cabling the Cabinets
Install Off-Premises Station Wiring
Figure 63: Connections to 24 Out-of-Building Telephones
3
Figure notes
1 Locally engineered cables
2 Multi-pair protector units (primary
protectors with heat coils or
equivalent with sneak current
protection)
3 B25A cable
4 Concentrator cable (WP90929 List 1)
5 356A adapter
6 Out-of-building wiring
Circuit Protectors
Carbon block, or equivalent protection is required at both building entrances. Also sneak current
protection is required. Protection can be provided by a 4-type protector or a 3-type protector plus a
separate sneak current protector. The 4-type protector is equipped with a heat coil.
The 4-type protector is the preferred device. For installations not using primary protection, 4-type
protectors should always be used. When the 3-type protector is already installed, a separate sneak current
protector is required. The multi-pair protector units and the off-premises cabling must be locally
engineered. Connectorized multi-pair protector units (female 25-pair connector) are recommended.
23 shows the recommended protectors.
118
1
6
2 2
8
10
9
12
11
Installation, Upgrades and Additions for Avaya CMC1 Media Gateways
5
5
4
5
crdf24o RPY 012398
7 Out-of-building analog telephones
8 Part of MDF
9 Station side (white field)
10 System side (purple field)
11 Cross-connect jumpers
12 To TN2183, TN769, or TN746B analog
line circuit pack
7
7
7
7
7
7
Table
June 2004