|
- An EXPRESSO System directly connected by a PRI tandem trunk or tie
trunk to another EXPRESSO System (Hybrid/PBX mode only) can use the
voice messaging system (VMS) of that EXPRESSO System (see Centralized
Voice Messaging for more details). External alerts and Music-On-Hold
sources, however, work only for the system where they reside.
- Each networked system should include its own voice mail and/or Auto
Attendant applications as well as its own external alerts and Music-On-Hold
sources. A single Auto Attendant, however, can transfer calls throughout
the network. It can answer only those calls that arrive on the PSTN
facilities of the system where it is connected. For this application,
4-digit pool and line/trunk numbers are recommended. To avoid ambiguity,
trunks should be unique�for example, 890 and 8900 should not be used
together.
- Calls received on PSTN facilities can be answered at a remote system
in a private network by assigning the trunks to a calling group with
a non-local member.
|