16 ports gsm gateway goip 16 for call terminal voip gateway

Descripción del producto

Enhanced Features

-Dynamic selection of codec
-Advanced jitter buffer
-Automatic traversal of NAT and firewall
-VLAN / Qos
-Router
-Echo cancellation for Speakerphone
-Comfort noise (CNG)
-Voice activity detection (VAD)
-Auto provisioning (requires auto provisioning server)
-On line firmware upgrade
-Multi-language support: English and Chinese 
 

Hardware Specifications

-Processor: ARM9E **3MHz
-DSP: VPDSP**1 **6MHz
-Memory: RAM *6MB/ 4MB
-GSM Module: Type: **0MHz, **0MHz, ***0MHz, ***0MHz
-Power: Input AC**0V ~ **0V, output DC*2V/2A ***0%
-Power consumption: *2W maximum
-Network card: **0/*0Base-T x2
-LED: Operation and lines light
-GSM Passway:sixteen
-Operating temperature: *0°C to *0°C (*2°F to **4°F)
-Storage temperature: 0°C to *0°C (*2°F to **2°F)
-Working Humidity: *0% ~ *0% Not congealed
-Weight: ***3 g (1 lb) (Including AC/DC Adapter)
-Warranty: one year
 

Supported Standards

-ITU: H.**3 V4, H.**5, H.**5, H.**5, H.**0
-RFC ***9 - RTP/RTCP
-RFC ***7 SDP
-RFC ***3 RTP Payload for DTMF Digits, Telephony Tones and Telephony Signals -RFC ***6 SIP INFO Method
-RFC ***1 SIP
-RFC ***4 Offer/Answer model with SDP
-RFC ***5 SIP REFER Method
-RFC ***2 A Message Summary and Message Waiting Indicator
-RFC ***9 Simple Traversal of User Datagram Protocol (UDP) Through Network Address Translators (NATs)
-RFC ***1 SIP Replaces Header
-RFC ***2 SIP Referred-By Mechanism

-draft-ietf-sipping-cc-transfer**4 Session Initiation Protocol Call Control - Transfer
-Codec: G.**1 (A/µ law), G.**9A/B, G.**3.1
-DTMF: RFC ***3, In-band DTMF, SIP INFO