E1 Echo Canceller

E1 Voice Over IP 
The IP•Tube DLE1-Ecan encapsulates full and fractional E1 circuits into IP packets. E1 Over IP connections provide for the interconnection of PBXs, Channel Banks and Telecom Switches via LANs, WANs, MANs, Satellite and Wireless Ethernet.

Echo Canceller 
The IP•Tube DLE1-Ecan has an integrated 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. 

Transparent Interconnect
The IP•Tube DLE1-Ecan’s transparent operation maintains the proprietary signaling required to support PBX features such as call conferences, call forwarding, caller ID and SS7. 

Signaling Support
PRI ISDN, SS7, and Proprietary out of band are 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.

VPN Network Management
Interconnecting the IP•Tube DLE1-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.

IP•Tube DLE1-Ecan OPTIONS

Lossless Data Compression Option -C
The IP•Tube DLE1-Ecan-C continuously detects idle and redundant data within each E1 Voice circuit resulting in as much as a 40 to 1 bandwidth savings.

TDM over IP WAN bandwidth is not consumed by silent or redundant circuits.

Note: Compression only supported with IP•Tube DLE1-Ecan-C models.

Protector OPTION -PRO
The protector option utilizes the second LAN interface as a redundant path for the interconnection of the IP encapsulated E1 Circuit. The extension of the E1 circuit has a fault tolerant link that is configured to always on, or with switch over criteria.

 

Rack Mount Kit

The IP•Tube family is ready for central office or data center environments with 19" and 23" Rack Mount Kits.

Echo Cancellation

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.

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

The IP•Tube DLE1-Ecan provides enterprises with the ability to interconnect their existing phone systems over flexible bandwidth lines that are used to carry data, voice, and video. The Voice Only Leased Line Toll charges assessed by long distance and local carriers are eliminated or dramatically reduced by transporting voice traffic across LANs and WANs.

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

Cable Operators
Cable operators connect traditional E1 leased line and private line services over their hybrid fiber coax (HFC) cable networks. HFC Cable network latency typically requires echo cancellation. 

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

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

CLEC PBX Back Haul

The IP•Tube DLE1-Ecan provides CLECs with a way to back haul 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. Local Exchange Carriers are able to offer an economical alternative to the local Phone Company.