Connections to ECS
Issue 5 January 1998 1-25555-230-024
Network Connections
Lucent Technologies has been a leader in providing compatibili ty with the Q-SIG
global networking protocol. This means you can connect t he DEFINITY ECS with
other switches throughout the world. Q-SIG Global Ne tworking was developed to
comply with the Q-SIG standards developed by the European Computer
Manufacturer’s Association and the International Standardization Organization . It
supports the ISDN-PRI connection from switch to switch as long as both systems
support the same protocol options.
Lucent Technologies supports both T1 and E1 lines. As industry standar ds
around the world, T1 and E1 provide the latest alternative to analog trunk ing.
T1/E1 access and conversion allows simultaneous conne ction to both T1 (1.544
Mbps) and E1 (2.048 Mbps).
DEFINITY ECS’s support of ISDN-PRI, ISDN-BRI, and available public network
services means that you can achieve full end-to-end ISDN connec tivity and take
advantage of ISDN services and features. The system provides complete ISDN
support in one system for small systems with 20 teleph ones up to large systems
with over 25,000 telephones.
DEFINITY ECS also supports connection to an Electronic Tandem Network. Di f-
ferent Electronic Tandem Network locations are connect ed via analog or digital
tie trunks. For example, a T1 or E1 interface can act as a high-speed digital
backbone for voice and data communications between Electronic Tandem Net-
work locations.
For Distributed Communications System (DCS) network conn ections, tie trunks
interconnect the switches that serve the DCS complex. The tie-trunk network may
be configured as a tandem tie-trunk network, a main/satellite/tribut ary network, or
an Electronic Tandem Network. The links connecting a Distributed Commun ica-
tion System may also be provided across a Software Defined Network. To sup-
port DCS customers who also have ISDN-Primary Rate Interface, DEFINITY ECS
can transport DCS messages over ISDN-Primary Rate Interface D channels. A s a
result, you are no longer limited to private-line connections between your variou s
locations. You can also use public network services.
DEFINITY ECS’s support of wideband signaling allows the system to handle
applications with transmission rates greater than 64 Kbps i n a single call. This
includes videoconferencing, Local Area Network bridging, and othe r wideband
applications. The system switches wideband data at N x DS0 data rates — a
standard for international networking.
For more information, see Chapter 12, "Networking Solutions".