32 *FXS analog voice gateway
IAD2000-32S is a multi-function voice gateway used to provide seamless connection from analog phones, fax or analog program-controlled switches PBX to IP voice gateways. It provides 32 FXS voice interfaces, with good voice/fax processing capabilities and high stability, providing efficient and high-quality IP voice services for operators, enterprises, residential users and companies.
Detailed parameters

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IPv6, IPv4
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SIP/IMS
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SNMP/TR-069
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recording
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Supports T.38 and Pass Through fax
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SIP v2.0 (RFC3261) based on UDP/TCP/TLS
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QoS:L3 DIFFServ,802.1P/Q VLAN Tagging
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Flexible routing and dialing rules
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DNS/DNS SRV (RFC 1706/RFC 2782)
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MWI
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Tripartite meeting
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HTTP/HTTPS automatic configuration/upgrade
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Syslog CDR
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Backup and restore
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call waiting
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call forwarding
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Busy signal detection
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Speed dial
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Hunting group
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TLS/SRTP