Grandstream Networks HT502 user manual Hardware Specification, Emc, Led

DTMF Method	Flexible DTMF transmission method, user interface of In-audio, RFC2833, and/or SIP
	Info
IP Signaling	SIP (RFC 3261)
Provisioning	TFTP, HTTP, HTTPS
Control	TLS/SIPS , SIP over TCP/TLS
Device Management	Web interface or via secure encrypted AES or non-encrypted central configuration file
	for mass deployment, Auto/manual provisioning system or via built-in IVR.
	NAT-friendly remote software upgrade (via TFTP/HTTP/HTTPS) for deployed devices
	including behind firewall/NAT. Syslog support
Dial Plan	Yes
UPnP	Yes
Universal Switching	Input: 100–240 VAC/50-60 Hz 0.3A Max
Power Adaptor	Output: 12VDC, 0.5A, UL certified
Environmental	Operational: 32o–104oF or 0o–40oC
	Storage: 10o–130oF / Humidity: 10–90% Non-condensing
Dimensions	115mm (L) x 75mm (W) x 27mm (H)
(H x W x D)
Short Haul Loop	2REN, Up to 1Km on 24 AWG wire
Call Handling Features	Caller ID display or block, Call waiting caller ID, Call waiting/flash, Call transfer, hold,
	forward, mute, 3-way conferencing, message waiting, Do-Not-Disturb (DND), call-return
	service
Caller ID	Bellcore Type 1 & 2, ETSI, BT, NTT, and DTMF-based CID
Polarity Reversal / Wink	Yes
EMC	EN55022/EN55024 and FCC part15 Class B
Safety	UL

Hardware Specification

The table below lists the hardware specification of HT502.

TABLE 4: HT502 HARDWARE SPECIFICATION

LAN Interface	2 x RJ45 10/100Mbps (integrated router)
LED	5 LEDs (GREEN)
Universal Switching	Input: 100-240V AC, 50/60Hz, 0.5A Max
Power Adaptor	Output: 12V DC, 1.25A
	UL certified
Dimension	115mm (L) x 75mm (W) x 27mm (H)
Weight	94 g (0.21lbs)
Temperature	32~104°F / 0~40°C
Humidity	10% - 90% (non-condensing)
Compliance
Grandstream Networks, Inc.		HT-502 User Manual	Page 8 of 32
		Firmware Version 1.0.4.2	Last Updated: 06/2011