Lucent Technologies Release 8.2 manual Attendant Call Waiting

Distributed Communications System B Private Networking

Detailed description Private 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

Unless prohibited by the COR, all incoming private network trunks, except CCSA, can access outgoing trunks without attendant or terminal-user assistance. All incoming CCSA calls must route to an attendant or a terminal user.

When off-network calling is part of the CCSA and EPSCS, long-distance calls route as far as possible over these networks before terminating on the public network. Thus, charges for toll calls are reduced. The COR you administer to individual system users determines whether access to this capability is allowed or denied.

In Italy, TGU/TGE/TGI trunks provide private network access between 2 switching systems. They also provide some feature transparency for COR (Inward Restriction), DID (when reaching busy stations), and Intrusion.

Interactions • Attendant Call Waiting

Call Waiting is provided via Italian TGU/TGE (main and satellite) trunks. Call

Waiting also is provided in Italy and all other countries through DCS.

•Attendant Intrusion

Attendant Intrusion is provided on satellite switches via TGU/TGE trunks. Attendant Intrusion also is provided through DCS.

Administration for Network Connectivity
555-233-504 — Issue 1 — April 2000	CID: 77730	349