Grandstream HT502 User Manual - Manual (Page 16)

FIRMWARE VERSION 1.0.14.1 HT502 USER MANUAL Page 14 of 54
Voice Compression 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
DHCP Server/Client Yes, NAT Router or Switched Mode
Telnet Server Yes
Fax over IP 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
QoS Diffserve, TOS, 802.1 P/Q VLAN tagging
IP Transport RTP
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: 32 o –104 o F or 0 o –40 o C
Storage: 10 o –130 o F / Humidity: 10 –90% Non-condensing
Dimensions
(H x W x D)
115mm (L) x 75mm (W) x 27mm (H)
Short Haul Loop 3RENs, Up to 150feet 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