MFG#: SPA921-NA
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Linksys SPA921 - VoIP phone

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Main Specifications
Product Description Linksys SPA921 - VoIP phone
Product Category VoIP phone
Device Type VoIP phone
Weight 2.2 lbs
Network/Transport Protocol DNS
VoIP Protocols SIP v2
Voice Codecs G.711, G.723.1, G.729a
Caller ID Yes
Display LCD display - monochrome
Display Resolution 128 x 64 pixels
Display Features Backlit
Network Ports Qty 1 x Ethernet 10Base-T
IP Address Assignment DHCP
Features On-hook dialing, music on hold, built-in web server
Network Features Network Address Translation (NAT)
General
Width 7.7 in
Depth 7.1 in
Height 6.3 in
Weight1 2.2 lbs
Dialer Type Keypad
Dialer Location Base
Speakerphone1 Yes
Conference Call Capability Yes
Caller ID1 Yes
Call Transfer Yes
Call Forwarding Yes
Call Waiting Yes
Call Hold Yes
Function Buttons Flash button, redial button
Volume Control Yes
Ringer Control Yes
Phone Directory Capacity 100 names & numbers
Additional Features On-hook dialing, music on hold, built-in web server
Miscellaneous
Cables Included 1 Network cable Ý Handset cord
Connections 1 x headset jack / sub-mini-phone 2.5 mm
Compliant Standards1 CE, FCC Part 15
Power
Power Device Power adapter - external
Based on the SIP standard, the SPA921 has been tested to ensure comprehensive interoperability with equipment from VoIP infrastructure leaders enabling service providers to quickly roll-out competitive, feature rich services to their customers. With hundreds of features and configurable service parameters, the SPA921 addresses the requirements of traditional business users while leveraging the advantages of IP telephony. Features such as easy station moves, presence, and shared line appearances (across local and geographically dispersed locations) are just some of the many advantages of the SPA921. The SPA921 uses standard encryption protocols to provide secure remote provisioning and unobtrusive in-service software upgrades. Linksys secure remote provisioning tools include detailed performance measurement and troubleshooting features, enabling network providers to deliver high quality support to their subscribers. Remote provisioning also saves service providers the hassle and expense of managing, preloading, and re-configuring customer premise equipment (CPE).