DTMF Method In-Audio, RFC2833 and/or SIP INFO

QoS Layer 2 (802.1Q VLAN/802.1p) and Layer 3 (ToS, Diffserv, MPLS)

Dimension and Weight 119mm x 78mm x 60mm, 0.31kg (with package)

Caller ID Bellcore type 1 & 2, ETSI, BT, NTT and DTMF-based CID

Network Protocols TCP/IP/UDP, RTP/RTCP, HTTP/HTTPS, ARP/RARP, ICMP, DNS, DHCP, NTP, TFTP, TELNET, PPPoE, STUN, SIP (RFC3261), SIP over TCP/TLS, SRTP, TR069, IPV4

Telephone Interfaces Two (2) FXS port (HT702) or four (4) FXS ports (HT704) /Network Interfaces One (1) 10/100Mbps auto-sensing ethernet ports (RJ45)

Telephone Interfaces Two (2) FXS port (HT702) or four (4) FXS ports (HT704)

LED Indicators Power, Internet, LINK/ACT, PHONE 1/PHONE 1 (HT702), PHONE 1/PHONE 2/PHONE 3/ PHONE 4 (HT704)

Operational: 32° ~ 104°F or 0° ~ 40°C; Storage: -14° ~ 140°F or -10°~ 60°C; Humidity: 10 – 90% non condensing

Media SRTP /Control TLS/SIPS/HTTPS / Management Syslong support, telnet, remote management using web broswer

The HT702/704 is a 2/4 port analog telephone adapter (ATA) that allows users to create a high-quality and managable IP telephony solution for residential and office environments. Its ultra-compact size, voice quality, advanced VoIP functionality, security protection and auto provisioning options enable users to take advantage of VoIP on analog phones and enables service providers to offer high quality IP service. The HT702/704 is an ideal ATA for individual use and for large scale commercial IP voice deployments.

Voice Codecs G.711 with Annex I (PLC) and Annex II (VAD/CNG), G.723.1, G.729A/B, G.726, iLBC, dynamic jitter buffer, advanced line echo cancellation /Fax Over IP T.38 compliant Group 3 fax relay up to 14.4kbps and auto-switch to G.711 for fax pass through

Grandstream HT704 ATA

Provisioning and Control HTTP, HTTPS, TELNET, TFTP, TR069, secure and automated provisioning using AES encryption, syslog

Universal Power Supply Input: 100-240VAC, 50-60Hz Output: 12V VDC, 0.5A (HT702), 1A (HT704)

گرنداستریم-Grandstream