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Call capability for analog, DCP, and IP phones
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ISDN BRI/PRI trunk interfaces
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Non-ISDN digital DS1 trunk interfaces
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Outbound dialing through the local PSTN (local trunk gateway) from analog, DCP, and IP phones
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Inbound calls from each trunk to pre-configured local analog or IP phones that have registered
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Direct inward dialing
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Multiple call appearances
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Hold and call transfer functions
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Contact closure feature
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Local call progress tones (dial tone, busy, etc.)
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Emergency Transfer Relay (ETR) in cases of power loss
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Auto fallback to primary MGC
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IP station registration
