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HT704 - Grand Stream Networks HT704 4-FXS-port Analog Telephone Adapter
- 4 FXS Ports for Analog Phones/Fax Machines
- Supports SIP Protocol
- Gigabit Ethernet Port
- Dual-Stage Network Address Translation (NAT) Routing
- Advanced Telephony Features (Caller ID, Call Waiting, etc.)
- High-Quality Voice Compression (G.711, G.723.1, G.729)
- Web-based Management Interface
- Compact and Robust Design
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Product Overview
The Grandstream Networks HT704 is a 4-port Analog Telephone Adapter (ATA) that allows for the creation of new analog or existing analog telephone services over an IP network. It enables users to connect up to four analog phones or fax machines to an IP-based communication system.
Technical Information
| Number of FXS Ports | 4 |
| VoIP Protocol | SIP |
| Ethernet Ports | 1 x 10/100/1000 Mbps Gigabit Ethernet |
| Voice Codecs | G.711, G.723.1, G.729 |
Additional Specifications
| Fax Support | T.38 Compliant Fax Relay |
| Management | Web Interface, TR-069 |
| Power | Universal Power Adapter (12V DC) |
| Manufacturer | Grandstream Networks |
Product Description
The Grandstream HT704 is a powerful and versatile 4-port Analog Telephone Adapter (ATA) designed to bridge the gap between traditional analog telephony and modern Voice over IP (VoIP) networks. It allows businesses and individuals to leverage their existing analog phones, fax machines, and other analog devices with an IP-based communication infrastructure, such as a VoIP PBX or a hosted VoIP service. The device supports the Session Initiation Protocol (SIP), a widely adopted standard for initiating, maintaining, and terminating real-time sessions, including voice and video calls. Each of the four FXS (Foreign Exchange Station) ports on the HT704 can be independently configured to support a standard analog telephone or fax machine. This enables users to connect up to four separate analog devices, effectively converting them into IP endpoints. The adapter features a Gigabit Ethernet port for high-speed network connectivity and supports dual-stage NAT routing, facilitating easier deployment behind firewalls. It also incorporates advanced telephony features like caller ID, call waiting, 3-way conferencing, and message waiting indication, enhancing the user experience. Configuration and management of the HT704 are typically done through a user-friendly web-based interface, allowing for easy setup of extensions, codecs, and other network parameters. It also supports TR-069 for automated provisioning and remote management, making it suitable for large-scale deployments. The HT704 is an ideal solution for businesses looking to migrate to VoIP without replacing their existing analog phone equipment, or for service providers offering VoIP services to customers with analog devices.


