Grandstream Networks HT502 , Hardware Specification ,

Grandstream Networks, Inc. HT-502 User Manual Page 8 of 32

Firmware Version 1.0.4.2 Last Updated: 06/2011

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

Power Adaptor

Input: 100–240 VAC/50-60 Hz 0.3A Max

Output: 12VDC, 0.5A, UL certified

Environmental Operational: 32o–104oF or 0o–40oC

Storage: 10o–130o F / Humidity: 10–90% Non-condensing

Dimensions

(H x W x D)

115mm (L) x 75mm (W) x 27mm (H)

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 Bellc ore 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

LAN Interface 2 x RJ45 10/100Mbps (integrated router)

LED 5 LEDs (GREEN)

Universal Switching

Power Adaptor

Input: 100-240V AC, 50/60Hz, 0.5A Max

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