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Soundwin S1600 Series   - Modular design to accommodate various types of telephony interfaces - Both support SIP and H.323 protocols: SIP Registration and Digest Authentication; H.323 Gatekeeper Registration. SIP Single Number / Account for multiple ports - Caller ID Delivery: FXS support DTMF Caller ID generation - Voice channels status display

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Soundwin S200 Series   Both support SIP and H.323 protocols - SIP Registration and Digest Authentication - Mode; H.323 Gatekeeper Registration - Caller ID Delivery: FXS support DTMF - Caller ID generation

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Soundwin S2400 Series   - Modular design to accommodate various types of telephony interfaces - Both support SIP and H.323 protocols: SIP Registration and Digest Authentication; H.323 Gatekeeper Registration. SIP Single Number / Account for multiple ports - Caller ID Delivery: FXS support DTMF Caller ID generation - Voice channels status display

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Soundwin S400 Series   - Both support SIP and H.323 protocols - SIP Single Number / Account for multiple ports - Caller ID Delivery: FXS support DTMF CallerID generation

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Soundwin S800 Series   - Both support SIP and H.323 protocols - SIP Single Number / Account for multiple ports - Caller ID Delivery: FXS support DTMF Caller ID generation