Release Key; Visually Impaired Operator Console - Nortel Norstar System Administration Manual

218 About your system telephones

Release key

Visually Impaired Operator Console

Compact Plus System Administration Guide
Pressing ® ends a call. You do not have to put the handset
down. ® also ends feature programming. While you are on a
call, do not press ® to end a feature you are using. If you do,
you disconnect the call. Press ≤ instead.
The Compact Plus system supports a Visually Impaired Operator
Console (VIOC) for the visually impaired attendant. The VIOC
provides computer-based speech synthesis for the programming
interface. A VIOC consists of an M7324N telephone, a CAPN
module, an IBM-compatible PC, a PCI-B card, a PC-based voice
synthesizer card, and an analogue mixer card.
The PC uses the PCI-B to obtain information from the Central
Control Unit (CCU) and controls the voice synthesizer to
generate audible prompts. The synthesizer output is routed to a
headset where it is coupled with the telephone call in progress,
enabling the operator to respond to the caller and to hear status
information at the same time.
The PCI-B is an add-on card for the PC that allows applications
running on the PC to access the Compact Plus D-channel
signalling and B-2 data channels. The VIOC requires D-channel
signals.
The voice synthesizer card is an add-on for the PC that is capable
of performing text-to-speech synthesis. The volume and speed of
the synthesized speech can be adjusted by the user.
The analogue mixer card is an add-on for the PC that takes the
analogue signal from the voice synthesizer and mixes it with the
headset audio output from the M7324N extension. The result is
sent to the headset port of the mixer card. The mixer card does not
provide any volume control.
To use the VIOC function, the display language needs to be set to
Operating. See 'Changing the display language' on page 115 for
instructions.
P0607114 Issue 01