Chapter 8 Features of Other Compatible Cisco Devices
DT-24+ and DE-30+ Digital Gateway Modules
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.
| Cisco ICS 7750 System Description |
8-6 | 78-10360-02 |
