Grandstream HT841/HT881 – Reliable Analog VoIP Adapters

Grandstream HT841/HT881 are compact, reliable analog VoIP adapters that connect your traditional phones and fax machines to IP networks. They deliver clear voice quality, easy setup, and secure communication—ideal for businesses upgrading to VoIP.

Product Specification:

  • Ports: HT841 – 1 FXS port; HT881 – 4 FXS ports
  • Network: 2 Gigabit Ethernet ports with PoE support
  • Audio: Supports HD voice and common codecs (G.711, G.729, OPUS)
  • Fax: T.38 Fax over IP and pass-through support
  • Security: TLS, SRTP encryption for secure calls
  • Power: PoE or 12V DC adapter
  • Size: Compact (190 × 100 × 28 mm)
  • Operating Temp: 0°C to 50°C

Description

Grandstream HT841/HT881 – Reliable Analog VoIP Adapters for Business Communication

What are Grandstream HT841 and HT881?

The Grandstream HT841/HT881 are high-quality analog telephone adapters (ATAs) designed to connect your existing analog phones and fax machines to modern VoIP networks. They enable businesses to easily migrate to cost-effective IP telephony without replacing legacy equipment. Whether you run a small office or a medium-sized business, these adapters ensure seamless, clear voice communication over your IP infrastructure.

Benefits of Using HT841/HT881 Analog VoIP Adapters

  • Cost Savings: Reduce phone bills by switching from traditional PSTN lines to affordable VoIP calls.
  • Easy Integration: Connects directly with popular IP PBX systems and VoIP service providers.
  • High Voice Quality: Supports HD voice codecs for clear and natural conversations.
  • Simple Setup: User-friendly web interface and plug-and-play installation save time and effort.
  • Flexibility: Supports multiple FXS ports (HT841 has 1, HT881 has 4), ideal for varying business needs.
  • Reliable Performance: Robust design ensures consistent, uninterrupted communication.

Key Features of Grandstream HT841/HT881

  • Analog Port Support: HT841 supports 1 FXS port; HT881 supports 4 FXS ports for multiple devices.
  • HD Audio Quality: Supports G.722 wideband codec and other standard voice codecs.
  • Multiple SIP Accounts: Supports up to 2 SIP accounts for flexible call handling.
  • Security: Advanced encryption protocols like TLS and SRTP protect your calls.
  • Fax Support: T.38 and pass-through fax over IP compatible.
  • QoS Support: Ensures voice traffic priority for clear, lag-free calls.
  • Power Options: PoE support (HT881) or external power adapter.
  • Web-Based Configuration: Easy-to-use management interface for quick setup and monitoring.
  • Call Features: Call transfer, forwarding, waiting, and three-way conferencing.