Digital Telephone Card E1 for Asterisk

Terratel Digital Telephone Card E1 PCI with Hardware Echo Cancellation (to 128 voice channels)

digital telephone card 4E1 for Asterisk with echo cancellation module

Digital Telephone Card E1 for Asterisk (brief)Terratel pdf brief

Futures

  • Legacy PBX/IVR Services, Asterisk IP-PBX
  • VoIP Gateways (supports SIP, H.323 и IAX)
  • SyncPPP, Frame Relay, Cisco HDLC, Multi-link PPP
  • a-Law, μ-Law, and Linear Modes Supported
  • Line coding HDB3, AMI, B8ZS

Overview

The D-201E/D-401E card is notable for its flexible installation options – it can be installed in both 5V and 3.3V slots. This allows to use the board in PCI as well as in PCI-X slots. The PCI master mode is used to relieve the CPU from I/O operations and increase the PCI bandwidth. The product allows for installing the hardware echo cancellation unit – ECM-128-OCT/ECM-064-OCT.

Terratel offer for the Asterisk project or FreeSwitch a line of high quality digital interface cards E1 to connect IP PBX, IVR systems, VoIP Gateway, or custom telephony solution to the public telephone network PSTN.

The D-201E/D-401E telephony card is designed to build digital telephony systems based on the Asterisk IP-PBX. The card performs data/voice exchange over E1 links.

The PCI 32/33 MHz bus is used as a host interface. This card provides up to 60/120 links to transmit voice and data over four E1 interfaces. The E1 operating mode can be selected individually for each PCI card interface.

D-201 digital telephone card 2E1 to connect IP PBX Asterisk

Pic 1. D-201 digital telephone card 2E1

The D-201E/D-401E telephony card is fully compatible with DAHDI/Zaptel drivers. Digital E1 cards can be completed with a Hardware Echo Cancellation module.

Terratel Hardware Echo Cancellation Module

Terratel has designed a hardware echo canceller module ECM-128-OCT for its digital telephony interfaces card E1 for Asterisk-based IP-PBX appliances (or FreeSwitch).

Hardware Echo Cancellation Module for Asterisk

Pic 2. Terratel Hardware Echo Cancellation Module ECM-128-OCT

The module provides a high level of echo cancellation and voice enhancement while reducing load on the CPU, as compared to Oslec (Open Source Line Echo Canceller), the software-based echo cancellation solution provided in the standard Asterisk framework.

Terratel’s echo cancellation module provides a high level of echo cancellation and voice enhancement while reducing load on the CPU. Each separate device (Terratel D201E or D401E) requires a single Echo Canceller card.
The hardware echo canceller module includes and support for up to a total of 128 voice channels.
It good alternative to software echo cancellation solution typically used in standard Asterisk systems (IP telephony solution)

Terratel Digital Telephone Card E1 Key Features and configurations

  • Up to or 60 simultaneous calls per 2E1 port (and 120 total 4E1 card)
  • Supports E1 physical interface connections
  • TDM protocols support: ISDN PRI, CAS
  • Industry standard RJ-45 port
  • PCI form factors
  • Available in 2E1 and 4E1 ports, and also in addition to the hardware echo cancellation module

Specifications

System Type Board
Application Legacy PBX/IVR Services

Voice over Internet Protocol (VoIP) services

Complex IVR Trees

“Meet-Me” Bridge Conferencing

VoIP Gateways (supports SIP, H.323 and IAX)

Calling Card Platforms

Voice/Data Router

PRI Switch Compatibility – Network or CPE

Asterisk IP-PBX

Port Features HDB3, AMI, B8ZS Line coding

CRC-4, not CRC-4, ESF, SF, D4T1/E1 Frame alignment

Data Transfer Protocols SyncPPP

Frame Relay

Cisco HDLC

Multi-link PPP

Voice Transfer Protocols E&M Wink

a-Law, μ-Law, and Linear Modes Supported

Hardware Requirements CPU 800 MHz or higher

RAM 128 MB or higher

PCI 2.2 slot 32-bit/33 MHz

Software Requirements Linux kernel 2.6.x

Ordering information

The company offers to buy digital VOIP Digital Telephone Card E1 for Asterisk:

Part Number Photo Description
D-201 D201 Digital board 2E1 for Asterisk, Telephone Card D201 2E1, 60 channels for voice and data transmission via 2 E1 interfaces without hardware echo cancellation module
D-201E D201E Digital board 2E1 for Asterisk, echo cancellation unit, Telephone Card D201E 2E1, 60 channels for voice and data transmission via 2 E1 interfaces, G.168 echo cancellation unit
D-401 D401 Digital board 4E1 for Asterisk, Telephone Card D401 4E1, 120 channels for voice and data transmission via 4 E1 interfaces without hardware echo cancellation module
D-401E D401E Digital board 4E1 for Asterisk, echo cancellation unit, Telephone Card D401E 4E1, 120 channels for voice and data transmission via 4 E1 interfaces, G.168 echo cancellation unit