Cisco SPA502G | 1-Line 2-Ports Ethernet with LCD Display IP Phone

1. Display: 128 x 64 monochrome LCD graphical display
2. Ethernet Switch: 10/100BASE-T Ethernet connection through an RJ-45 interface
3. Power over Ethernet: IEEE 802.3af PoE
4. Protocol Support: SIP, SPCP
5. Voice Codec: G.711a, G.711u, G.726, G.729a, G.722
6. Speakerphone: Full-duplex speakerphone with acoustic echo cancellation
7. Headset Support: Dedicated RJ-9 headset port
8. Audio Controls: Volume control rocker switch for handset, headset, and ringer
9. Call Control: Basic and advanced telephony features including caller ID, call waiting, call transfer, call forward, call hold, and more
10. Security: Password-protected access to administrator and user-level features
11. QoS: Differentiated Services (DiffServ), 802.1p/Q tagging (VLAN), Layer 3 ToS, and DSCP
12. Dimensions: 8.42 x 7.48 x 1.73 in (214 x 190 x 44 mm)

Notes:
1. The phone is compatible with Cisco Unified Communications 500 Series, Cisco SPA 9000 Voice System, and hosted IP telephony systems.
2. The phone can be wall-mounted using the optional wall-mount kit.
3. The phone supports up to two Cisco SPA500S Expansion Modules, providing up to 64 additional buttons.