Lucent Technologies DEFINITY Enterprise Communications Server Release 8.2 Administration For Network Connectivity Instructions Manual

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•When an analog-station call goes to coverage, the station drops from the call. This 
is the exception to the branch leaving the extended-to party ringing. If the main 
attendant extends a call to an analog station and that call goes to coverage and 
later returns to the main attendant, the call is treated as an incoming LDN call and 
the attendant must...

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•DCS Operation
If an RLT trunk group is administered as a DCS trunk, the following interaction 
applies: On an incoming CAS call to the attendant, the DCS message displays 
instead of the name of the incoming RLT trunk group. Upon answering the call, 
the attendant hears call-identification tones, indicating that the call is a CAS call. 
Use a TRUNK-NAME button...

Distributed Communications System 
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B  Private Networking
Emergency (911) CallsThe Enhanced 911 (E911) systems installed in many jurisdictions in the U.S. are 
equipped so that by dialing a service code (911 in the U.S.) a victim of a fire, 
accident, crime, or medical emergency may quickly access a public safety agency that 
will dispatch the appropriate response. The public E911 system maintains a database 
that...

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Extended Trunk Access
Use Extended Trunk Access (ETA) in conjunction with Uniform Dial Plan (UDP) to 
allow DEFINITY ECS to send any unrecognized number (such as an extension not 
administered locally) to another switch for analysis and routing. Such unrecognized 
numbers can be Facility Access Codes, Trunk Access Codes, or extensions that are 
not in the UDP...

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In this case, the ETA Route Pattern routes undefined dialed strings. However, since 
an ETA Node Number is not specified, non-call-related DCS messages are not routed.
CASE #3
•ETA Route Pattern — Not administered
•ETA Node Number — Administered
In this case, the ETA Node Number provides the route pattern. Non-call-related DCS 
messages also can route since a...

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Extension Number Portability
Extension Number Portability (ENP) gives you the ability to assign any extension to 
any switch in an ENP subnetwork. Stations can be moved across switches while 
retaining the original extension number, as long as the switches are part of the ENP 
subnetwork. EPN is used in conjunction with Automatic Alternate Routing (AAR) 
and...

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Interactions•Distributed Communications System
If you use DCS, the ENP node numbers must correspond to DCS node numbers.
Inter-PBX Attendant Service
Inter-PBX Attendant Service (IAS) allows attendants for multiple branches to be 
concentrated at a main location. Incoming trunk calls to the branch, as well as 
attendant-seeking voice-terminal calls, route over...

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•Centralized Attendant Service
CAS and Inter-PBX attendant calling cannot be used at the same time.
•Dial Access to Attendant
Administer Dial Access to Attendant via the dial platform to the same digit on 
both the IAS main switch and the IAS branch switch. On the branch switch, 
administer the PBX attendant access code (Console Parameters form) to match the...

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Detailed descriptionPrivate networks can include:
•Common-control switching arrangement (CCSA)
•Distributed Communications Systems (DCS) and Enhanced DCS (EDCS)
•Electronic tandem network (ETN)
•Enhanced private-switched communications service (EPSCS)
•Tandem-tie-trunk network (TTTN)
•Italian Traslatore Giunzione Uscente/Entrante/Interno (TGU/TGE/TGI) trunks...

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Uniform Dial Plan 
Uniform Dial Plan (UDP) provides a common 4- or 5-digit dial plan (specified in the 
Dial Plan Record) that can be shared among a group of switches. Interswitch dialing 
and intraswitch dialing both require 4- or 5-digit dialing. UDP is used with an 
electronic tandem network (ETN); main, satellite, and tributary switches; and 
Distributed...