Filter
Top Products
Distributed Communications System B Private Networking
Administration for Network Connectivity
CID: 77730 555-233-504 — Issue 1 — April 2000
312
Distributed Communications System
Distributed Communications System (DCS) allows you to configure 2 or more
switches as if they were a single, large DEFINITY ECS. DCS provides attendant and
voice-terminal features between these switch locations. DCS simplifies dialing
procedures and allows transparent use of some of the DEFINITY ECS features.
(Feature transparency means that features are available to all users on DCS regardless
of the switch location.)
Configuring a DCS network is a complex process that involves 4 major steps:
• Planning your DCS network
• Connecting the physical equipment in the network
• Administering the physical layer (hardware connections)
• Administering the link layer to create a DCS
Description of DCS
DCS network configurations can be:
• TCP/IP DCS network — A DCS network configured with 2 or more switches
using TCP/IP (PPP or 10/100BaseT Ethernet) signaling for transporting DCS
feature transparency information.
• Traditional DCS network — A DCS network configured with 2 or more switches
using BX.25 signaling for transporting DCS feature transparency information.
• D-channel DCS network (private network only) — A DCS network that includes
DEFINITY ECS using the ISDN-PRI D-channel DCS transparency information
(D-channel signaling). ISDN-PRI facilities with this type of network use only
private-line facilities.
• D-channel DCS network (public network access/egress) — A DCS network that
includes DEFINITY ECS using D-channel signaling. At least one of these
ISDN-PRI facilities uses a public network ISDN-PRI.
• Integrated DCS network (private network only) — A DCS network that contains a
variety of switches using TCP/IP, BX.25, or D-channel signaling methods. At
least one DEFINITY ECS serves as an ISDN-PRI DCS Gateway node. This node
can interwork DCS transparency information between the three signaling
protocols.
An ISDN-PRI DCS Gateway node provides backward compatibility to existing
traditional DCS networks.
• Integrated DCS network (public network access) — The same as D-channel DCS
Network (Private Network Only), but the D-channel of at least one ISDN- PRI
facility uses a public network ISDN-PRI.