Grandstream Networks HT-286 User Manual

Grandstream Networks, Inc. 

HT–286 User Manual 

Page 7 of 28  

 

 

HT-286 supports one FXS port for Internet data, voice, and fax. 

 

1 RJ45 (LAN) 

Client 

1 

No 

Yes 

iLBC, G.723, 

G.711, G.729, 

G.726, T.38 

TFTP/HTTP 

 

1 lines / 1 SIP accounts 

SIP 2.0 (RFC 3261), TCP/UDP/IP, RTP/RTCP, HTTP, ARP/RARP, ICMP, 
DNS, DHCP, NTP, TFTP, PPPoE protocols 

1 button 

RJ-45 10 Mbps 

Device Management  

Web interface or via secure (AES encrypted) central configuration file for mass 
deployment 

 

Support device configuration via built-in IVR, Web browser or central 
configuration file through TFTP or HTTP 

 

Support Layer 2 (802.1Q, VLAN, 802.1p) and Layer 3 QoS (ToS, DiffServ, 
MPLS) 

  

Auto/manual provisioning system 

  

NAT-friendly remote software upgrade (via TFTP/HTTP) for deployed devices 
including behind firewall/NAT 

  

Syslog support (on Rev 2.0) 

Yes, Client 

Advanced Digital Signal Processing (DSP) 

Dynamic negotiation of codec and voice payload length 

Support for G.723,1 (5.3K/6.3K), G.729A, G.711 µ/A, G.726, and iLBC codecs 

In-band and out-of-band DTMF (in audio, RFC2833, SIP INFO) 

Silence Suppression, VAD (voice activity detection), CNG (comfort noise 
generation), ANG (automatic gain control), Line Echo Cancellation( G.168) 

Adaptive jitter buffer control  

Packet delay & loss concealment  

Support volume amplification 

Support configurable Call Progress Tones 

Caller ID display or block, Call waiting caller ID, Call waiting/Flash, Call 
transfer, hold, forward, mute, 3-way conferencing(on Rev 2.0)  

Manual or dynamic host configuration protocol (DHCP) network setup; RTP