T1 over IP for Voice with Echo Cancellation
E1 over IP for Voice with Echo Cancellation

T1 Circuit Extension over IP / E1 Circuit Extension over IP

Other Products
Multiplexers
STM-1/4 SDH Multiplexers
TDM over IP / Ethernet
E1 & T1 GSM Gateways
Channel Banks
Voice Compression
Echo Cancellers
Voice over IP (VoIP)
T1 <> E1 Converter
E1 / T1 WAN Routers

Test and Measurement:
Power Analyzers
Optical Power Meters
Digital Multimeters
GPIB / PXI Controllers
Clamp Meters
Insulation Testers
Thermometers

Echo Canceller:
The IP•Tube-T1-Ecan / IP•Tube-E1-Ecan has an integrated T1 / E1 Echo Canceller that cancels up to 64 milliseconds of Far End echo. The echo canceller meets ITU-T G.164, G.165 and ITU-T G.168 requirements for echo cancellation.

IP-Tube-T1-ECAN / IP-Tube-E1-ECAN Features:

Transparent Interconnect:
The IP•TubeT1-Ecan / IP•Tube-E1-Ecan's transparent operation maintains the proprietary signaling required to support PBX features such as call conferences, call forwarding, caller ID and SS7.

 

Lossless Data Compression Option The IP•Tube-T1-Ecan-C / IP•Tube-E1-Ecan-C continuously detects idle and redundant data within each T1 Voice circuit resulting in as much as a 56 to 1 bandwidth savings (or 40 to 1 bandwidth savings). TDM over IP WAN bandwidth is not consumed by silent or redundant circuits. Note: Compression only supported with IPTube•T1-Ecan-C / IP•Tube-E1-Ecan-C models

Signaling Support:
PRI ISDN, SS7, ESF, D4, SLC-96, Proprietary out of band, and robbed bit signaling is supported. Echo cancellation is automatically disabled during FAX and Modem communications. Transparent support for Modem or Fax. Voice quality is not compromised. Legacy phone equipment investment is preserved.

Assured Delivery Protocol:
In order to assure that circuits are extended over connections with fault tolerance the IP•Tube-T1-Ecan / IP•Tube-E1-Ecan has as a standard capability an Assured Delivery Protocol that supports high performance full duplex real time data. The protocol has packet out of sequence detection and re-sequencing, duplicate skipping, and real time lost packet retransmission with configured delay.

Dual LAN Interfaces:
All IP•Tube•T1-Ecan / IP•Tube-E1-Ecan models ship with dual 10/100BaseT 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
• The LAN ports can be configured to support connections over 2 opposite ADSL links
• Alternator Option for load balanced SDSL interconnects
• Protector Option for Redundant Packet Path connections with Constant or Switch Over Criteria.

VPN Network Management:
Interconnecting the IP•Tube-T1-Ecan / IP•Tube-E1-Ecan through a Virtual Private Network with sufficient real time committed information rate ensures that the required quality of service is provisioned. The second Ethernet interface provides a management port. Each LAN interface features independent IP network configurations

Pay-As-You Grow Field Upgrades:
The IP•Tube-T1 Ecan / IP•Tube-E1-Ecan are designed for Pay-As-You-Go growth from 1 T1 to 2 T1s (or 1 E1 to 2 E1s). Customers can elect to economize initial installations, buy purchasing a single active T1 / E1 port and enable the additional T1 / E1 Port via a software-based license key.
Field Upgrade benefits are extended to our Industry-Best Loss less Data Compression. Just as T1 / E1 ports are field upgrade able, so is Loss less Data Compression. At any time, each T1 / E1 port on the IP-Tube-T1-Ecan / IP•Tube-E1-Ecancan be upgraded to Loss less Data Compression with a simple software-based license key installation. If you determine that your IP•Tube-T1-Ecan / IP•Tube-E1-Ecan is best deployed with Loss less Data Compression, your still in business with the per port field upgrade!

IP-Tube-T1-ECAN / IP-Tube-E1-ECAN Technical Specifications:

 

Technical Specifications

Lossless Data Compression Option: • Detects idle and redundant data within each DS0 • Configurable Silence Detection Range • Interconnect bandwidth is not consumed by silent or redundant data • T1: Compression settings from 8 to 1 to 56 to 1 • E1: Compression settings from 8 to 1 to 40 to 1 TFTP Online Upgrade Capable (FLASH ROMs) • IPTube is fully operational during upgrade Quality of Service Support: • IP Type of Service (TOS) CLI configurable • IANA Registered UDP Port 3175 Regulatory: • CE • Safety -IEC60950 • EMC - CFR 47 Part 15 Sub Part B:2002, • EN55022:1994+A1&A2, EN55024,   ICES-003  1997, CISPR 22 Level A • Telecom Part68 Management: • Telnet support with Edit and Paste Template Files • Console Port for Out of Band Management • SNMP support (MIB I, MIB II) with configurable traps • Remote config., monitoring, & reset • Telco Diagnostics: Local Loop, Remote Loop Rear Panel/Power: • 12-24 VAC/VDC, 1.0A. International Adapters Available • Optional -48V 0.25 Amp • Dimensions: 9" (L) x 7.3” (W) x 1.50” (H)

LAN Network Interface: • Two 10/100BaseT Full/Half Ethernet • Autonegotiation or Configurable Speed and Duplex LAN Network Protocols Supported: • IP, TCP, UDP, ICMP • Assured Delivery Protocol Echo Canceller: • Voiceband Echo Cancelling according to ITU G.165 and G.168 • u- and A-Law coding according to ITU G.711 • 24 (or 32) channels with end echo path delay of less than 63.75 m T1/Fractional T1 (E1/Fractional E1) Specifications: • One or two Port Models • Connects directly to T1 / E1 or DS1 • Framing - ESF or D4 • Coding - B8ZS or AMI (HDB3 or AMI for E1) • Supports DS0 assignments from 1 to 24 (or 1 o 31) • Not Contiguous Configuration x-y,z Supported T1 Over IP / E1 over IP Protocol: • TDM Over IP • Circuit Extension Services Over IP - CESOIP • HDLC Over IP - HDLCOIP • Frames Per Packet Configurable 8 to 56 • Low Latency Mode: 1 millisecond 8 T1 frames • Max Payload Mode: 7 millisecond 56 T1 frames   Max Payload Mode: 5 millisecond 40 E1 frames • Comprehensive Clocking: Internal, Network, Adaptive

IP-Tube-T1-ECAN / IP-Tube-E1-ECAN Applications:

Bhumika Integrated Voice and Data over IP:

Far End Echo Cancelling:
IP•Tube-T1-Ecan IP•Tube-E1-Ecan utilizes a Digital Signal Processor that detects and cancels echo at the far end so that the packet network delay has no impact on echo. The echo canceller samples the voice signal, estimates and removes the echo, leaving the original speech. The linear digital signal processor (DSP) models the echo and performs the main echo cancellation task. A non-linear DSP processor is then optimally employed to subtract out any residual echo or reflected noise components. Echo is one of the most important factors that affects voice quality. The presence of echo depends on both echo level and echo delay. The primary source of echo is the impedance mismatch at the hybrid that links a 2-wire analog loop to a 4-wire digital trunk. The hybrid is not completely efficient in carrying the electrical energy and a certain amount of the electrical energy, or voice signal, is reflected back and may be perceived as echo. Occasionally, acoustic feedback of certain phones also causes noticeable echoes. These sources of echo are able to be cancelled by the human brain as long as the time between our speech and the echoed speech is not greater than 32 milliseconds.

Our T1 Over IP / E1 over IP products have a minimum delay configuration, 1 millisecond packetization and 4 packet buffering, which introduces a delay of 5 milliseconds. The amount of delay introduced by the packet network depends upon its switching times, packet processing, packet jitter, transmission, loading and quality of service configuration.

For example a network connection that utilize Gigabit Ethernet switches, which introduce delays in the microseconds, does not require echo cancellation. Wide Area Networks that traverse an intranet or internet backbone have varying degrees of delay which can easily exceed 28 milliseconds. Total round trip delays in excess of 32 millisecond makes echo perceptible.

The IPTube’s Echo Cancellation provides the elasticity to support clear connections across networks with significant delay and packet jitter.

LANs:
The most compelling option for the interconnection of T1 / E1 based systems is when it can be accomplished over a Local Area Network. The deployment of Fiber based LANS such as FDDI and Gigabit Ethernet, provides organizations with high performance and high quality bandwidth that is especially well suited for the interconnection of PBXs and Telecom Switches.

WANs:
Wide Area Networks that have sufficient bandwidth and Quality of Service provisioning result very significant cost savings especially for Multinational Corporations. The IP•Tube T1C / IP•Tube E1C, a model with lossless data compression, detects idle and redundant data within each voice circuit resulting in a 56 to 1 bandwidth savings. WAN bandwidth is not consumed by silence or redundant samples.

IP Cellullar Back Haul:
IP•Tube T1's / IP•Tube E1's are used to provide transparent interconnection of the base stations (BTSs), base station controllers (BSCs) and mobile switching centers (MSCs) over IP/Ethernet packet-switched networks. Supported access media include fiber, coax and fixed wireless. Cellular phone service providers are able to save substantially by converting to a packet-switch network from circuit TDM lease lines. The IP•Tube T1 / IP•Tube E1 has the duplicate packets transmission and reception feature that provides for resilient performance through a lossy interconnect.

Wireless Ethernet:
Connecting phone systems across a wireless Ethernet connection has a return on investment that is measured in weeks. Eliminating the wired connection for the T1 / E1 based communication equipment is made possible with the IP•Tube’s T1 Over Ethernet / E1 Over Ethernet capability.

IP/Ethernet Service Providers:
Companies, that are able to provide IP/Ethernet access networks generate new revenue by offering traditional T1 / E1 leased line and private line services, such as:

• Cable operators: Cable operators connect traditional T1 / E1 leased line and private line services over their hybrid fiber coax (HFC) cable networks.

• Metropolitan Area Networks: Metropolitan carriers with IP or Broadband Ethernet access networks deliver traditional leased and private line services.

• Utilities: Utilities generate new revenue by offering traditional T1 / E1 leased line and private line services over their fiber or power line networks.

CLEC PBX Back Haul:
The IP•Tube T1 / IP•Tube E1 provides CLECs with a way to back haul T1 / E1 DS0s from a customer’s phone systems over their Internet connection. The back hauled DS0s are connected to the CLECs phone switch for connection to the Public Switched Telephone Networks. Competitive Local Exchange Carriers are able to provide customers with a very economical alternative to the local Phone Company since the Local Loop charges for each phone line are consolidated

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Bhumika International Inc
Mississauga, Ontario, Canada
Phone: + 1 (416) 930 2931
E-mail: info@bhumika.ca
Website: http://www.bhumika.ca

Technical Specifications are subject to change without notice.
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