8*FXO analog voice gateway
IAD1000-8O is a multi-channel high-access gateway that provides a low-cost, easy-to-operate voice over IP telephony solution for small businesses, home offices, remote offices and multi-branch enterprises. Supports 8 FXO voice interfaces for connecting traditional telecom operator phone lines or analog PBXs.
Detailed parameters

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IPv6, IPv4
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System logs and CDRs
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SIP v2.0 based on UDP/TCP/TLS (RFC3261)
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Telnet/WEB login password change
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QoS:L3 DIFFServ,802.1P/Q VLAN Tagging
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WEB/TFTP firmware upgrade
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DNS/DNS SRV (RFC 1706/RFC 2782)
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DTMF mode: Signal/RFC2833/INBAND
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G.711A/U law, G.723.1, G.729A/B
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HTTP/HTTPS automatic configuration/upgrade
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Syslog CDR
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Flexible recording and dialing principles
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Backup and restore
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SNMP/TR-069
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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