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Request a Quote 700385982 Avaya 5621 IP Telephone The 5621 IP Telephone is cost effective and provides a 7x29 character back-lit graphic display, paperless button labels, call log, speed dial, twenty-four programmable feature keys, web browser and two-way speakerphone. The 5621 also includes a two-port Ethernet switch.

The 5621 IP telephones have additional application functionality. Push of audio and textual alerts to the phones is now supported through the application programming interfaces (APIs) on these phones. The Avaya Phone Application Suite includes a set of pre-packaged phone applications for use on the 5621. Please refer to the Phone Application Suite section on for more details.
Avaya 5621 IP Telephone