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@ -47,6 +47,11 @@ switchtype=national
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; fxo_ks: FXO (Kewl Start)
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; pri_cpe: PRI signalling, CPE side
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; pri_net: PRI signalling, Network side
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; sf: SF (Inband Tone) Signalling
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; sf_w: SF Wink
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; sf_featd: SF Feature Group D (The fake, Adtran style, DTMF)
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; sf_featdmf: SF Feature Group D (The real thing, MF (domestic, US))
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; sf_featb: SF Feature Group B (MF (domestic, US))
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; The following are used for Radio interfaces:
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; fxs_rx: Receive audio/COR on an FXS kewlstart interface (FXO at the channel bank)
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; fxs_tx: Transmit audio/PTT on an FXS loopstart interface (FXO at the channel bank)
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@ -56,6 +61,10 @@ switchtype=national
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; em_tx: Transmit audio/PTT on an E&M interface (1-way)
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; em_txrx: Receive audio/COR AND Transmit audio/PTT on an E&M interface (2-way)
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; em_rxtx: same as em_txrx (for our dyslexic friends)
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; sf_rx: Receive audio/COR on an SF interface (1-way)
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; sf_tx: Transmit audio/PTT on an SF interface (1-way)
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; sf_txrx: Receive audio/COR AND Transmit audio/PTT on an SF interface (2-way)
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; sf_rxtx: same as sf_txrx (for our dyslexic friends)
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;
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signalling=fxo_ls
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;
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