Installing and wiring telephones and trunks
216 Installing the Avaya S8700 Media Server with an Avaya G650 Media Gateway
December 2003
Figure 85: Connections to 24 out-of-building telephones
Off-premises protection requirements
Both building entrances require carbon block or equivalent protection and sneak current protection.
Protection can be provided by:
• a 4-type protector, which is equipped with a heat coil
• a 3-type protector plus a separate sneak current protector
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.
Figure notes
1 Locally Engineered Cables and
Equipment
2 25-Pair Connector
3 Multi-Pair Protector Units (Primary
Protectors with Heat Coils or Equivalent
with Sneak Current Protection)
4 B25A Cable (Male to Female)
5 Concentrator Cable (WP90929 List 1)
6 356A Adapter
7 Out-of-Building Wiring
8 Out-Of-Building Analog Telephones
9 Part of Main Distribution Frame
(MDF)
10 Station Side
11 Media Gateway Side
12 White Field
13 Purple Field
14 Cross-Connect Jumpers
15 Tip and Ring Wires
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