Аналоговый телефонный адаптер HT-922T имеет встроенный маршрутизатор 1 x 10/100 Eth (WAN), 1 x 10/100 Eth (LAN), 2 порта FXS. Протоколы: ITU-H.323 V4 и IETF SIP V2. Кодеки : T.38 G.711 A/μ law, G.729A/B, G.723.1. HT-912T может использоваться в SOHO, небольших офисах и филиалах крупных предприятий.
- Open Standard VoIP Protocols (ITU H.323 V4 and IETF SIP V2);
- Two 10/100 Ethernet for WAN / LAN connections;
- Peer-to-Peer IP Calls;
- Speech quality ensured by QoS at the Ethernet and IP layers and comprehensive jitter buffer;
- Support T.38;
- Line Echo Cancellation;
- PPTP VPN ,VLAN and QoS support;
- NAT Transversal and Router functions;
- Voice prompts, HTTP Web, Auto Provision support for configuration and updates;
- Highly stable embedded Linux operating system in high performance ARM 9 Processor.
Основные возможности
- Two RJ-11 FXS port for traditional phone set or PBX’s trunk line;
- LEDs for Power, Ready, Status, WAN, PC, FXS;
- Call Forward, Call Hold, Call Transfer;
- Dial Plan;
- Caller ID.
Дополнительные возможности
- Dynamic selection of codec;
- Advanced jitter buffer;
- Automatic traversal of NAT and firewall;
- VLAN / Qos;
- Router;
- Echo cancellation for Speakerphone;
- Comfort noise generation (CNG);
- Voice activity detection (VAD);
- Auto provisioning (requires auto provisioning server);
- On line firmware upgrade;
- Multi-language support: English and Chinese.
Поддерживаемые стандарты
- ITU: H.323 V4, H.225, H.235, H.245, H.450
- RFC 1889 - RTP/RTCP
- RFC 2327 - SDP
- RFC 2833 - RTP Payload for DTMF Digits, Telephony Tones and Telephony Signals
- RFC 2976 - SIP INFO Method
- RFC 3261 - SIP
- RFC 3264 - Offer/Answer model with SDP
- RFC 3515 - SIP REFER Method
- RFC 3842 - A Message Summary and Message Waiting Indicator
- RFC 3489 - Simple Traversal of User Datagram Protocol (UDP) Through Network Address Translators (NATs)
- RFC 3891 - SIP “Replaces” Header
- RFC 3892 - SIP Referred-By Mechanism
- draft-ietf-sipping-cc-transfer-04 – Session Initiation Protocol Call Control — Transfer
- Codec: G.711 (A/μ law), G.729A/B, G.723.1
- DTMF: RFC 2833, In-band DTMF, SIP INFO
Физические характеристики
- Operating temperature: 10°C to 40°C (50°F to 104°F);
- Storage temperature: 0°C to 50°C (32°F to 122°F);
- Weight: 0.10 kg (4.2 lb) (Including AC/DC Adapter);
- Size: 70mm (W) x 101mm (L) x 25mm (H);
- Power: 12 Vdc 500 mA (AC/DC adapter included). Classification 0 under IEEE 802.3af on CN2x4.
Комплектация
- DBL 922Т шлюз;
- Провод для подключения к сети;
- CD-диск;
- Гарантийный талон.
