Zoom 5821 VoIP Telephone Adaptor ATA 2 x FXS Ports + G.729 |
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5821-72-11F
£28.83ex £33.88inc
Expected Delivery: 5-10 Days
All images are for illustrative purposes only
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Zoom's diverse line of Voice over IP (VoIP) telephone adapters includes models with a combination of FXO and FXS ports, products with integrated routing, and products that integrate both an ADSL modem and routing. All Zoom VoIP products use Session Initiation Protocol (SIP) the standard for voice communications over the Internet, and all products feature outstanding voice quality. Many models feature the TelePort, Zoom's distinctive solution for providing reliable emergency calling, power fail over, and quick compliance with emergency dialing regulations. |
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| Telecommunications |
| SIP (RFC 3261) version 2 |
Yes |
| SDP (RFC 2327) |
Yes |
| RTP/RTCP (RFC1889, 1890) |
Yes |
| G.711 Compression |
Yes |
| G.168 Echo Cancellation |
Yes |
| 3 Way Call |
Yes |
| Phone Ports |
2 x RJ-11 |
| Security |
| Security |
Provisioning/Configuration/Authentication • Password-protected, Web based administration • ARC4 Encryption for TFTP Configuration Profiles • Authentication (Digest using MD5) |
| System |
| Service Support |
Quality of Service (QoS) Support: Layer 2 Class-of-Service (CoS) Tagging (802.1P) Layer 2 (802.1Q VLAN) Layer 3 Type-of -Service (ToS) Tagging (RFC 791/1349) Layer 3 DIFFServ (RFC 2475)i 0fo |
| System Requirements |
| System Requirements |
Minimum Requirements: High speed Internet connection (typically a DSL or data-over cable connection) • A router or gateway to share the broadband Internet connection • A Touchtone telephone (conventional analog phone) or a fax machine • CD ROM drive in a personal computer which supports a Web browser (Windows, Macintosh, Linux or other) and is connected to the router |
| Physical |
| In The Box |
VoIP telephone adaptor • Power adaptor • Quick Start Guide • CD ROM • Ethernet cable • Phone cord |
| Form Factor |
Analogue Telephone Adaptor |
| Height |
2.8 cm |
| Depth |
11.2 cm |
| Width |
14.6 cm |
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- Economical solution provides Voice over the Internet using conventional telephones
- Provides two FXS ports for two VoIP channels
- Uses industry-standard Session Initiation Protocol (SIP)
- Clear, natural-sounding voice quality
- Supports remote delivery of firmware updates
- Supports automatic provisioning by service providers
- Supports Quality of Service (QoS)
- Supports STUN (Simple Traversal of UDP over NATs)
- Supports advanced telephone services including CLASS features, Call Waiting, Caller Identification, Call Transfer, Call Hold, Call Forwarding, Distinctive Ring, and Voice Message Waiting Indication
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