Black•Tube VF

4 Wire Analog Voice Frequency over Packet Networks

The BlackTube VF has balanced 4-Wire 600 ohm Voice Frequency interfaces that utilize a PCM CODEC to convert Analog Voice Band into Digital that is AES encrypted for secure transport over Ethernet packet services. This conversion facilitates the interconnection of Voice Band communications over cost effective and ubiquitous Ethernet based LAN/WAN/MAN wired and wireless network services such as MPLS, xDSL, Cable Modem and 4G/LTE.

4-Wire Analog to IP Converter

4-Wire leased line analog networks interconnect VoiceBand Communications for Utilities, Municipalities and Public Safety Agencies. Cost and availability issues with these copper telephone lines make finding transport alternatives a priority. Converting VoiceBand interfaces to packet data is a cost effective and easy to implement alternative.

BlackTube VF Standard Features

Dual LAN Interfaces

All BlackTube VF models ship with dual 10/100 BaseT Ethernet LAN ports. The dual Ethernet interfaces provide for:

• Management interface on LAN port 2 when LAN port 1 is connected to a VPN tunnel
• Protector Option: Redundant Packet Path connections with Constant or Switch Over Criteria

Assured Delivery Protocol

In order to assure high quality communications over links with intermittent or noisy performance, such as Wireless, the BlackTube VF employs Engage’s robust Assured Delivery Protocol with the following benefits:

• Packet out of sequence detection and re-sequencing
• Duplicate skipping
• Lost packet retransmissions with configured delay

IP Tube VF Optional Features

Protector OPTION -PRO
The protector option utilizes the second LAN interface as a redundant path for the interconnection of the IP encapsulated VoiceBand. The extension of the VoiceBand has a fault tolerant link that is configured to always on, or with switch over criteria.

Public Safety Radio Tower Wireline Encrypted Audio over Packet Networks

A primary application for the BlackTube VF is the conversion of Voice Grade circuit interfaces, that connect Public Safety Radio Base Stations to concentrator hubs, into packets. The BlackTube VF employs high resolution Analog to Digital circuitry that maintains the quality of the original audio signal.

The packetized Voice Band communication can be transported over Ethernet Packet services such as:

• xDSL • Cable • Cellular 2/3/4G LTE • MPLS • WiFi

The BlackTube VF interfaces directly to the 4 wire analog interface of the 4 Wire Wireline interface of a Radio Base station facilitating the use of Ethernet / IP / MPLS networks to backhaul Analog Radio Tower locations.