
Figure 45: Connections to 24 out-of-building telephones
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| 12 | 13 |
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| crdf24o CJL 101396 | ||
Figure notes: |
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1. | Locally Engineered Cables and | 8. |
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| Equipment |
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| Telephones | ||
2. |
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| 9. | Part of Main Distribution Frame | ||
3. |
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| Protectors with Heat Coils or | 10. | Station Side | |||
| Equivalent with Sneak Current | 11. | Media Gateway Side | |||
| Protection) |
| 12. | White Field | ||
4. | B25A Cable (Male to Female) | 13. | Purple Field | |||
5. | Concentrator Cable (WP90929 List 1) | 14. | ||||
6. | 356A Adapter |
| 15. | Tip and Ring Wires | ||
7. |
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Off-premises protection requirements
Both building entrances require carbon block or equivalent protection and sneak current protection. Protection can be provided by:
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Issue 3 January 2008 93