Instruction manual

DEFINITY® Business Communications System and GuestWorks® Issue 6
Overview
555-231-208
Issue 1
April 2000
Networking Solutions
9-9Network interfaces and equipment
9
■ Interconnects the system with central offices such as AT&T’s 4ESS switch
(where services such as MEGACOM and Software Defined Network can
be accessed) and 5ESS
®
-2000 switches
■ Interconnects the system with private networks by connection with DS1
facilities
■ Can be used with the same Automatic Alternate Routing capabilities as
normal analog E&M lead tie trunks.
Configuring your system with an alternate voice/data DS1 interface does the fol-
lowing:
■ Uses out-of-band signaling in which signaling information is multiplexed
onto one of the 64 kbps digital channels
■ Permits end-to-end voice and digital data connections between systems
■ Delivers 23 clear 64 kbps digital channels plus one signaling channel
multiplexed onto a 1.544 Mbps Digital Signal Level 1 line with provisions for
framing, maintenance, and signaling
■ Delivers 8 kbps timing and slip information for a synchronization subsystem
■ Supports ground-start and loop-start switch-central office, foreign
exchange, and Wide Area Telecommunications Service
(inbound/outbound) trunks, as well as direct inward dial trunks,
off-premises stations, and dedicated voice/data system connections.
To achieve even greater benefits than those just listed, you can combine the DS1
interfaces and ISDN-PRI to give you additional capabilities. ISDN-PRI is a
DS1-compatible direct-connect access service that links the intelligence inherent
in the network with the intelligence provided by your system.
For example, with ISDN-PRI, the Software-Defined Data Network service may be
accessed. Software Defined Data Network provides virtual private-line connectiv-
ity, via a switched network, for voice, data, and video applications. Soft-
ware-Defined Data Network services compliment the Software-Defined Network
voice services.
The system delivers Automatic Restoration capability with Software-Defined Data
Network, which restores disrupted connections between access end points
(non-signaling trunk) and data end points (devices that connect the system to
computers and data communications equipment). This restoration is achieved
within seconds of a service disruption so that critical data applications can remain
operational.