IP Phones

• IP Phone
• UDP

Price Range

• Below $80 (4)
• $80 - $110 (4)
• $110 - $130 (4)
• $130 - $170 (4)
• Above $170 (5)

Brand

• Linksys (6)
• Grandstream (5)
• Avaya (3)
• Snom (3)
• Nortel (2)
• More...

Codec

• G.723.1 (13)
• G.729A (11)
• G.711 (11)
• G.711a (8)
• VAD (Voice Activity Detection) (7)
• More...

Supplementary Service

• Call Waiting (H.450.6) (14)
• Call Hold (H.450.4) (13)
• Call Transfer (H.450.2) (12)
• Message Waiting Indication (H.450.7) (8)
• Name Identification (H.450.8) (7)
• More...

QoS

• IEEE 802.1p/Q (9)
• DiffSer (8)
• ToS (7)
• VAD (6)
• RTCP Monitoring (4)

Power Source

• AC Power (4)
• AC-DC Power Adapter (9)
• Power over LAN / IEEE 802.3 af / PoE (9)

Additional Features

• Built-in NAT Router (3)
• Call History (4)
• Caller ID Presentation (2)
• Hand Free Mode (8)
• Mute (1)
• More...

VoIP Signaling Protocol

• SIP (12)
• H.323 (3)
• MGCP (2)

Networking Connectivity

• 2 x RJ 45 - 10/100 Base-TX (Ethernet) (13)
• 1 x RJ 45 - 10/100 Base-TX (Ethernet) (4)
• RJ 45 - 10/100 Base-TX (Ethernet) (2)
• 1 x PBX Interface (RJ 11) (2)

Keyboard

• Alpha Numeric (10)
• Numeric Keypad (3)