Grandstream Networks HT503 user manual Hardware Specification, Led

	Pass-through (pending), Fax Data pump V.17, V.19, V.27ter, V.29 for T.38 fax relay
Security	DIGEST authentication and encryption using MD5 and MD5-sess
Physical Design	Stylish and compact design; small universal power supply, ideal for travel

Hardware Specification

The table below lists the hardware specification of HT503.

TABLE 4: HT503 HARDWARE SPECIFICATION

LAN interface	1xRJ45 10/100 Mbps Port
WAN interface	1xRJ45 10/100 Mbps Port
FXS telephone port	1 x FXS (RJ11)
FXO telephone port (PSTN Port)	1x PSTN pass-through and life line port
LED	Power, WAN, LAN, PHONE, and LINE (Green)
Universal Switching	Input: 100–240 VAC, 50-60 Hz
Power Adaptor	Output: 12VDC, 0.5A, UL certified
Dimension	25mm x 115mm x 75mm (when laying flat);
	115mm x 25mm x 75mm (standing up)
Weight	Approximately 0.6lbs (0.3kg)
Temperature	Operational: 32° - 104°F or 5° – 45°C
	Storage: 10°–130°F
Humidity	10% - 90%
	(non-condensing)
Compliance

Grandstream Networks, Inc.	HT503 User Manual	Page 8 of 38
	Firmware 1.0.4.2	Last Updated: 06/2011