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
crdf24o CJL 101396
8
7
1
9
10
11
12
13
14
15
16
2
2
4
4
4
4
6
6
5
3
3
