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Zoom 5821F

details: Two Channel VoIP Telephone Adapter
hardware type: VoIP Gateway
date added: 2009-09-03
updated: 2011-05-17
The 5821F is a VoIP telephone adapter with 2 FXS phone ports that allow two VoIP channels, and a single 10/100Base-T Ethernet port. This adapter supports a variety of VoIP features, such as call waiting, caller ID, call transfer and distinctive ring. It can be configured remotely using a TFTP or HTTP download from the service provider and updates to the firmware can be automatically delivered. Up to five and often more attached phones can be rung simultaneously on each FXS port using the built-in ring generator.
 
 
 
 5821F Features
 General
 Availability: currently available
 LAN / WAN Connectivity
 WAN ports: 0
 LAN ports: 1
 LAN ports type: 10/100 Base-TX (RJ-45)
 RJ-11 FXS VoIP phone ports: 2
 Router
 DHCP client: yes
 QoS: yes
 ToS / DiffServ: yes
 Routing Protocols: VLAN tagging (802.1q)
 VoIP
 VoIP Protocols: SIP v2 (RFC 3261)
SDP (RFC 2327)
RTP / RTCP (RFCs 1889/1890)
STUN (RFC 3489)
 VoIP Audio Codecs: G.711 (PCM)
G.729 (a/b)
 VoIP Voice Features: Echo Cancellation (G.165/G.168)
3-way conferencing
Caller ID
Call waiting
Call transfer
Call forward
Distinctive Ring
Do Not Disturb (DND)
 Device Management
 Default IP address: www.zoom.com/atamanager
 Default admin username: n/a
 Default admin password: n/a
 Administration: Web-based (LAN)
Windows application
Remote centralized management
TFTP (RFC 1350)
 Firmware upgradeable: yes
 Misc hardware info
 NTP client: yes
 Links
 Product page: http://www.zoomtel.com/products/voip_pro...
 Datasheet: http://www.zoomtel.com/graphics/datashee...

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