Avaya CMC1 manual Circuit Protectors, Connections to 24 Out-of-Building Telephones

Install Off-Premises Station Wiring

Figure 63: Connections to 24 Out-of-Building Telephones

		1	5
		6
2		2
		4	5
3
		8
	9	10	5

11 12

Figure notes:

7

7

7

7

7

7

crdf24o RPY 012398

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

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

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. Table 23 shows the recommended protectors.

Issue 10 June 2005 135