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Interfaces
Subscribers
- Pulse and multi-frequency telephone
- Local and long-distance public telephone
- Semipublic telephone
- Tele-fed ISDN basic access (2B + D)
- Primary access (30B+D).
Access
Other switches
- Analogic line signaling
- 2 wires direct current
- 4 wires E&M direct current
- 4 wires E&M pulse
- Digital line signaling
- Direct E&M
- Pulse E&M
- Digital R2
- Register signaling
- SCC#7 signaling
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