whatsapp

Gateways

Gateway Análogo a VoIP, 4xFXO, 1xFXS HT841

The Grandstream HT841 is the ideal solution for small and medium-sized businesses looking to seamlessly integrate their existing analog communication system with modern IP networks. This gateway enables a smooth transition to fully digital infrastructures by connecting traditional PSTN phone lines to a VoIP telephony system.

Buy now
Gateway Análogo a VoIP, 4xFXO, 1xFXS HT841

Main features

  • Complete Integration: Equipped with 4 FXO ports for analog phone lines and 1 FXS port for an analog device (phone or fax).
  • Advanced Telephony Features: Caller ID, call waiting, blind/attended transfer, call forwarding, hold, Do Not Disturb (DND), and 3-way voice conferencing per port.
  • Robust Security: Protects communications with AES encryption and advanced security protocols including TLS, SIPS, and SRTP.
  • High Availability: Features SIP server failover, automatically switching to a secondary server if the primary fails, plus a Lifeline function to maintain basic PSTN calls during power outages.
  • Flexible Network Connectivity: Includes two 10/100 Mbps RJ45 ports, high-performance NAT router, and PoE support for simplified single-cable installation.
  • Reliable Fax Support: Fully compatible with the T.38 protocol for dependable Fax-over-IP transmission.

Technical specifications

Telephony Interfaces

4x FXO (RJ11) + 1x FXS (RJ11)

Network Interfaces

2x RJ-45 10/100 Mbps (NET1, NET2) – PoE supported on NET2 (802.3af)

LED Indicators

POWER, NET1, NET2, FXS, FXO

Telephony Features

Caller ID (show/hide), call waiting, flash, blind/attended transfer, forwarding, hold, DND, 3-way conferencing per port

Codecs / Voice / Fax

G.711 (Annex I & II), G.723.1, G.729A/B, G.726-32, iLBC, OPUS; Fax-over-IP via T.38 (up to 14.4 kbps) with fallback to G.711 passthrough

Protocols / Signaling

SIP (RFC 3261), SIP over UDP/TCP/TLS, RTP/RTCP, HTTP/HTTPS, ARP/RARP, ICMP, DNS, DHCP, NTP, TFTP, SSH, Telnet, STUN, TR-069

Security

TLS, SIPS, SRTP, HTTPS, AES encryption, certificate-based protection, secure provisioning

Additional Features

SIP server failover, Lifeline relay (FXS to FXO), integrated router/NAT, QoS (VLAN, 802.1p, ToS, DiffServ)

Power Supply

PoE on NET2 (48 V / 0.5 A); DC input: 12 V / 1 A

Dimensions / Weight

190 mm × 100 mm × 28 mm / ~0.46 kg

Operating Conditions

Operating temp: 0 °C to 40 °C (32–104 °F); Storage: −10 °C to 60 °C; Humidity: 10–90% non-condensing

Certifications

FCC, CE, RCM, IC, UKCA

About the brand

Grandstream Networks is a global leader in unified communications, delivering high-quality VoIP, networking, and security solutions that empower businesses to modernize their communications systems with reliability, flexibility, and advanced security.

    Contact us