ASTRA D-401E - Digital Telephony Card
ASTRA D-401E board featuring 4x voice/data transmission interfaces over E1/T1/J1 links and a hardware echo cancellation unit.
The ASTRA 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/T1/J1 links. The PCI 32/33 MHz bus is used as a host interface. This card provides up to 120 links to transmit voice and data over four E1/T1/J1 interfaces. The E1, T1 or J1 operating mode can be selected individually for each PCI card interface. The ASTRA D-401E telephony card is fully compatible with DAHDI/Zaptel drivers. The 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.
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
• Line coding: HDB3, AMI, B8ZS
• Frame alignment: CRC-4, не CRC-4, ESF, SF, D4T1/E1
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
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