Telephone Systems General Description

Features
Station Message Detail Recording (SMDR)
Strata CTX General Description 11/02 65
Station Message Detail Recording (SMDR)
For each incoming, outgoing or tandem call, the Strata CTX can generate a record that includes
details of the call, including the originating station or trunk, the start time of the call, its duration,
authorization codes, etc. If a station user dials “911,” the Strata CTX will also generate a record at
the beginning of the call as part of its internal notification that an emergency call is in progress.
SMDR requires an optional BSIS interface PCB and a connected Call Accounting system.
Strata Net Multi-system Networking
Strata Net is a private networking application based on QSIG, an international standard for the
interconnection of PBX. Strata Net delivers a rich set of calling features across multiple Strata
CTX systems distributed throughout the enterprise. Users benefit from transparent dialing and
simple feature operation.
Advanced networking features include Centralized Voice Mail, Centralized Attendant and
Network Station Message Detail Reporting (SMDR). Alternate Routing provides for toll bypass
configurations and automatic recovery from network disruptions.
Strata CTX systems are interconnected with DS1 (T1) circuits to provide ISDN-type inter-
connectivity. DS1 circuits may be leased from public carriers, derived from Frame Relay or IP
networks, or connected across twisted-pair cabling or fiber optics.
Up to 128 nodes can be accommodated within the Strata Net numbering plan. Up to four nodes
connected in tandem can give satisfactory performance with regard to latency. As with any
network design, transport, delay speech volume and other issues must be carefully considered.
Coordinated Numbering Plan
Strata Net can be configured to allow users to call each other across network nodes with simple
network directory numbers. This eliminates the user’s need for access codes and network maps.
Calls that encounter a busy or unanswered destination can be forwarded to any node in the
network, including a centralized voice mail system or attendant.
QSIG Basic Call Control
The Strata CTX conforms to the QSIG standard for Basic Call Control. This is the basis for all
Strata Net connectivity and interoperability with PBXs from other manufacturers. Basic Call
Control provides for connection, dialing, identification of calling and called parties’ names and
numbers and message waiting indications among other features. Toshiba does not guarantee
interoperability with other manufacturer’s products: only conformance to the standard.
Alternate Routing
Each Strata CTX can be programmed for thousands of routing patterns for Strata Net alone. This
allows the creation of networks in which calls can be automatically re-routed around network
disruptions. Centralized facilities and features can continue to work and users will be unaware of
problems while they are being repaired.
Alternate Routing also permits Toll Bypass in which Strata Net can be used to deliver a public call
from a point in the network where toll charges are minimized. Such a scheme is known as “Hop
Off” for the ability of the private network to determine the point at which the call will hop off to
the public network.