Grandstream Networks HT502 User Manual page 16

Voice Compression
DHCP Server/Client
Telnet Server
Fax over IP
QoS
IP Transport
DTMF Method
IP Signaling
Provisioning
Control
Device Management
Dial Plan
UPnP
Universal Switching
Power Adaptor
Environmental
Dimensions
(H x W x D)
Short Haul Loop
Call Handling Features
Caller ID
Polarity Reversal / Wink
EMC
FIRMWARE VERSION 1.0.12.4
G.711 + Annex I (PLC), Annex II (VAD/CNG format) encoder and decoder, G.723.1A,
G.726(ADPCM), G.729A/B/E, iLBC, G.726 provides proprietary VAD, CNG, and signal
power estimation, Voice Play Out unit (reordering, fixed and adaptive jitter buffer, clock
synchronization), AGC (automatic gain control), Status output, Decoder controlling via
voice packet header
Yes, NAT Router or Switched Mode
Yes
T.38 compliant Group 3 Fax Relay up to 14.4kpbs and auto-switch to G.711 for Fax
Pass-through, Fax Datapump V.17, V.19, V.27ter, V.29 for T.38 fax relay
Diffserve, TOS, 802.1 P/Q VLAN tagging
RTP
Flexible DTMF transmission method, user interface of In-audio, RFC2833, and/or SIP
Info
SIP (RFC 3261)
TFTP, HTTP, HTTPS
TLS/SIPS , SIP over TCP/TLS
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
Yes
Yes
Input: 100–240 VAC/50-60 Hz 0.3A Max
Output: 12VDC, 0.5A, UL certified
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Operational: 32 –104 F or 0
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Storage: 10 –130 F / Humidity: 10–90% Non-condensing
115mm (L) x 75mm (W) x 27mm (H)
3RENs, Up to 150feet on 24 AWG wire
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
Bellcore Type 1 & 2, ETSI, BT, NTT, and DTMF-based CID
Yes
EN55022/EN55024 and FCC part15 Class B
HT502 USER MANUAL
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