user manual

DEFINITY Enterprise Communications Server Release 5
Maintenance and Test for R5vs/si
555-230-123
Issue 1
April 1997
Maintenance Object Repair Procedures
Page 10-1209S-SYN-PT (Speech Synthesis Port)
10
S-SYN-PT (Speech Synthesis Port)
The TN725 Speech Synthesis circuit pack provides four independent Speech
Synthesis Ports which may be connected to any of the voice time slots on the
TDM Bus. Each Speech Synthesis Port consists of a speech synthesizer device
(SSD) and is managed by a custom-coded programmable speech synthesizer
(PSS) controller. The PSS controller is, in turn, controlled by the on-board
microprocessor via a command interface specifically designed for this
application. The PSS controller’s main function is the orderly transfer of encoded
speech from the speech vocabulary read-only memory (ROM) to the SSDs. The
SSDs decode it and produce 64 kb/s 5-255 PCM (Pulse Code Modulation)
speech. The encoded speech is stored in up to 512K bytes of on-board
read-only memory (ROM). In addition, each Speech Synthesis Port has an
associated dual-tone multifrequency (DTMF) receiver to receive touch-tone digits
from a station set connected to the port via a voice time slot. The station set may
be connected to the Speech Synthesis Port through either a line or trunk circuit.
When there is an incoming call to a port, the "listen" network time slot is
connected to the DTMF receiver input and the "talk" network time slot is
connected to the SSD output. This enables the Speech Synthesis Port to support
speech synthesis features or touch-tone input with voice response features.
Some of the features that use the Speech Synthesis Port’s capabilities include
Leave Word Calling, Automatic Circuit Assurance, Automatic Wakeup
(hotel-motel), and do Not Disturb (hotel-motel).
The Speech Synthesis circuit pack should not be confused with the
Announcement circuit pack as different voice features are supported by each
circuit pack.
1. Where P is the port network number (1 for PPN and 2 for EPN); C is the carrier designation
(for example, A, B, C, D, or E); and SS is the address of the slot in the carrier where the
circuit pack is located (for example, 01, 02, ..., etc.).
MO Name As It
Appears in
Alarm Log
Alarm
Level
Initial System
Technician
Command to Run
1
Full Name of MO
S-SYN-PT MAJOR test port PCSSpp sh Speech Synthesis Port
S-SYN-PT MINOR test port PCSSpp l Speech Synthesis Port
S-SYN-PT WARNING test port PCSSpp sh Speech Synthesis Port