The fully featured 12-line Cisco SPA509G VoIP Phone provides highly compatible calling 
facilities. You can experience more clarity while calling and can be in touch with your family and friends where ever they are. The phone offers DiffServ DSCP Packet marking function and supports both SIP and RIP protocols. It provides 802.1 q/p COS frame tagging to ensure quality service.
The smart Cisco VoIP phone has got 3 inches backlit LCD screen which shows all the supported functions of the phone with a maximum resolution upto 128 x 64 pixels. It shows active line indication including name and number. The unit offers 12 Tri-colour LEDs line keys, 4 Softkey buttons, 4-way navigation key and 12 button dial pad in it. There is an indicator light which indicates message waiting. In addition to the above buttons, the phone also has dedicated buttons for Mute, Headset, Speakerphone, Volume, Hold, Menu settings and Voicemail access.
The phone directory offers 100 entries storage capacity. It offers multiple ringtone facility and you can select ring tones for each line. It allows 10 user downloadable ring tones and so you can select your own ringtone for a line. The phone supports Anonymous caller blocking, do not disturb, Uniform Resource Identifier dialling support, Call timer, Name and identity display, Speed dialling, Configurable dial/numbering plan support, Intercom, Group paging, Network Address Translation Traversal and Simple Traversal of UDP Through NATs support features.
Highly qualified handset of the phone ensures maximum clarity while you talk. The full duplex speakerphone avails hands free calling. The wide audio facilitates improved audio and speaker quality. The phone supports Call hold, Music on hold, Call waiting, Caller ID name and number, Outbound caller ID blocking, Call transfer, Three-way call conferencing and Multiparty conferencing.
The Cisco SPA509G 12-Line VoIP Phone offers connectivity through 2 Ethernet 10/100 Mbps Ports, 802.3af Power over Ethernet, 2.5 mm Stereo Headset connector and AUX Port. The 2.5 mm stereo headset connector allows more clear and quality voice communication.
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