DBL 912Т - VoIP-шлюз

Описание

Аналоговый телефонный адаптер HT-912T имеет встроенный маршрутизатор 1 x 10/100 Eth (WAN), 1 x 10/100 Eth (LAN), 1 порт 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

• One 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