Chapter 8 Features of Other Compatible Cisco Devices
DT-24+ and DE-30+ Digital Gateway Modules
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Cisco ICS 7750 System Description
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encoding (A-law or mu-law), dual tone multifrequency (DTMF) detection,
generation, and signaling, and line echo cancellation. Thirty simultaneous
channels of G.723.1 encoding/decoding are also supported.
Features
DT-24+ and DT-30+ digital gateways include the following features:
• A single PCI-based card (PCI bus for power only) with the following
components on board:
–
Integrated DSPs
–
T1 (RJ-48C female) interface (DT-24+) or E1 (RJ-48C female)
interface (DT-30+)
–
10BASE-T Ethernet network interface (RJ-45 female)
–
Control processor with communications software to connect to
Cisco CallManager (required) over TCP/IP/Ethernet link
–
Remote boot procedure with DHCP (for IP address) and TFTP software
download (downloadable and upgradable)
–
T1/E1 PRI ISDN Layer 3 protocols, including National ISDN-2 (NI-2),
5 Electronic Switching System (5ESS), 5ESS custom, DMS100,
DMS250, and other protocol support
• Both user-side and network-side ISDN signaling support to emulate terminal
equipment and switching equipment, respectively
• Supports Skinny Gateway protocol communications with Cisco CallManager
to provide supplementary services (such as hold and transfer) under control
of IP telephony clients
For more information about the DT-24+ and DE-30+ modules, refer to the Cisco
publication DT-24+ or DE-30+ Module Installation and Configuration Note.
