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VoIP Support
IETF SIP version 2 (RFC3261 and companion RFCs)			Yes
BroadWorks / BroadSoft Inc.			Yes
Asterisk / Digium, Inc.			Yes
CommuniGate Pro / CommuniGate Systems, Inc.			Yes
Voice Codec
G.711a-law / G.711µ-law / G.722 (wideband) / G.729a / G.726 (32K)			Yes
Provisioning
HTTP / HTTPS / FTP / TFTP and Local / Remote WEB Configuration			Yes
QoS Support
DSCP			Yes
Static VLAN			Yes
TOS			Yes
Keys and Indications
Menu Driven User Interface			Yes
Line Status			Yes	N/A
Direct Handset Call Buttons			Yes	N/A
Message Waiting Indicator on the Base Unit			Yes	N/A
RF-System
US-DECT 1.92GHz - 1.93GHz (for USA and Canada)			Yes
EU-DECT 1.88GHz - 1.90GHz / GAP			Yes
Phone Features
Multiple Handset			6
Multiple Registration Support			8
Simultaneous Voice Calls			3
2.5mm Headset Jack*			Yes
Grouping Handset : Handset Select for Receiving Call			Yes
Handset and Number Select for Making Call			Yes
Redial			Yes
Do Not Disturb			Yes
Anonymous Call (CLIR)			Yes
Anonymous Call Rejection			Yes
Busy Lamp Field (BLF) for Handsets			Yes	N/A
Calling Party Name and Number Presentation (CLIP, CNIP)			Yes
Call Rejection			Yes
DTMF Dialing During Call			Yes
3-Party Conferencing			Yes
Call Transfer			Yes
Direct Call Transfer from Base Unit to Handset			Yes	N/A
Call Hold			Yes
Call Forward Unconditional / User Busy / No Answer			Yes
Call Waiting			Yes
Distinctive Ringing			Yes
Ringtone Selection			Yes
Interface
Ethernet Ports			2	1
Ethernet Interface			10/100 Mbps
Power Consumption	US Model	Base unit	Standby: Approx. 2.1 W Maximum: Approx. 3.6 W	Standby: Approx. 1.3 W Maximum: Approx. 1.9 W
		Charger	Standby: Approx. 0.1 W Maximum: Approx. 2.6 W
	EU Model	Base unit	Standby: Approx. 2.3 W Maximum: Approx. 4.2 W	Standby: Approx. 1.3 W Maximum: Approx. 2.5 W
		Charger	Standby: Approx. 0.1 W Maximum: Approx. 2.6 W
Battery			630mAh Ni-MH　2 x AAA
Talk Time			Up to 5 hours
Standby Days			Up to 240 hours
Operating Environment			0 °C - 40 °C (32 °F - 104 °F) 20 % - 80 % relative air humidity (dry)
Dimensions (Width x Depth x Height; handset on cradle, stand attached)	Base unit		215.5 mm x 155.1 mm x 125.9 mm	178 mm x 74.4 mm x 134.4 mm
Weight			Base: 720 g Handset: 130 g Charger: 60 g	Base: 290 g Handset: 130 g Charger: 60 g

* KX-TGP550 : on base unit and on cordless handset. KX-TGP500 : on cordless handset.