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Grandstream Networks HT386 user manual Grandstream Networks, Inc

Models: HT386

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IVR IVR is a software application that accepts a combination of voice telephone input and touch-tone keypad selection and provides appropriate responses in the form of voice, fax, callback, e-mail and perhaps other media.

MTU A Maximum Transmission Unit (MTU) is the largest size packet or frame, specified in octets (eight-bit bytes), that can be sent in a packet- or frame-based network such as the Internet. The maximum for Ethernet is 1500 byte.

NAT Network Address Translation

NTP Network Time Protocol, a protocol to exchange and synchronize time over networks The port used is UDP 123 Grandstream products using NTP to get time from Internet

OBP/SBC Outbound Proxy or another name Session Border Controller. A device used in VoIP networks. OBP/SBCs are put into the signaling and media path between calling and called Caller. The OBP/SBC acts as if it was the called VoIP phone and places a second call to the called Caller. The effect of this behavior is that not only the signaling traffic, but also the media traffic (voice, video etc) crosses the OBP/SBC. Without an OBP/SBC, the media traffic travels directly between the VoIP phones. Private OBP/SBCs are used along with firewalls to enable VoIP calls to and from a protected enterprise network. Public VoIP service providers use OBP/SBCs to allow the use of VoIP protocols from private networks with internet connections using NAT.

PPPoE Point-to-Point Protocol over Ethernet is a network protocol for encapsulating PPP frames in Ethernet frames. It is used mainly with cable modem and DSL services.

PSTN Public Switched Telephone Network. The phone service we use for every ordinary phone call, or called POT (Plain Old Telephone), or circuit switched network.

RTCP Real-time Transport Control Protocol, defined in RFC 3550, a sister protocol of the Real-time Transport Protocol (RTP), It partners RTP in the delivery and packaging of multimedia data, but does not transport any data itself. It is used periodically to transmit control packets to participants in a streaming multimedia session. The primary function of RTCP is to provide feedback on the quality of service being provided by RTP.

RTP Real-time Transport Protocol defines a standardized packet format for delivering audio and video over the Internet. It was developed by the Audio-Video Transport Working Group of the IETF and first published in 1996 as RFC 1889

SDP Session Description Protocol is a format for describing streaming media initialization parameters. It has been published by the IETF as RFC 2327.

SIP Session Initiation Protocol, An IP telephony signaling protocol developed by the IETF (RFC3261). SIP is a text-based protocol suitable for integrated voice-data applications. SIP is designed for voice transmission and uses fewer resources and is considerably less complex than H.323. All Grandstream products are SIP based

STUN Simple Traversal of UDP over NATs is a network protocol allowing clients behind NAT (or multiple NATs) to find out its public address, the type of NAT it is behind and the internet side port associated by the NAT with a particular local port. This information is used to set up UDP communication

between two hosts that are both behind NAT routers. The protocol is defined in RFC 3489. STUN will usually work well with non-symmetric NAT routers.

Grandstream Networks, Inc.

HT-386 User Manual

Page 33 of 34

 

Firmware 1.0.3.64

Last Updated: 2/2007

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Grandstream Networks HT386 user manual Grandstream Networks, Inc
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HT386 specifications

Grandstream Networks has established itself as a leading provider of communication solutions, specializing in voice-over-IP (VoIP) technology. Among its diverse product line, the HT386, HT496, HT488, HT486, and HT286 analog telephone adapters stand out as exceptional devices tailored for seamless integration into modern telecommunication systems.

The Grandstream HT386 is particularly noted for its robust performance and versatility. It supports up to 4 lines, making it ideal for small to medium-sized businesses that require efficiency and reliability. The unit features advanced security protocols such as SRTP and TLS to protect voice communications, ensuring that data is secure during transmission. Additionally, the HT386 boasts an easy installation process and web-based management, which simplifies configuration and maintenance.

Next in line is the HT496, which caters to users with even more demanding requirements. This adapter accommodates up to 4 FXS ports, allowing the connection of multiple analog devices. Enhanced features like 2 SIP accounts and high-definition voice codecs ensure clear audio quality. The HT496 is designed to offer seamless interoperability with various IP routers and switches, making it a flexible solution for businesses expanding their communication framework.

The HT488, another notable entry, is geared towards those looking for high-performance analog telephony. With support for 2 lines and advanced echo cancellation technologies, it guarantees crystal-clear calls, minimizing disruptions during conversations. Additionally, it provides multiple network connectivity options, including DHCP and static IP, allowing users to choose the best configuration suitable for their network environment.

The HT486 offers similar benefits but is optimized for users who require a compact solution. This model features an elegant design while maintaining support for essential VoIP features. With 2 FXS ports and built-in firewall capabilities, it ensures secure and efficient communication for residential and small business users.

Finally, the HT286 is perfect for those seeking an entry-level adapter without compromising on quality. Supporting a single line with a straightforward setup process, it is ideal for users transitioning from traditional phone systems to VoIP technology. This model is also compatible with various VoIP service providers, ensuring users have flexibility when choosing their phone services.

In summary, Grandstream’s HT series—HT386, HT496, HT488, HT486, and HT286—delivers a comprehensive range of features and technologies suited for different communication needs. Each model combines quality with user-friendly interfaces, ensuring that users can fully leverage the benefits of VoIP, whether for personal or business use.