Maintenance-Object Repair Procedures
555-233-143
8-1364 Issue 1 May 2002
S-SYN-PT (Speech Synthesis Port)
The TN725B Speech Synthesis circuit pack provides four independent Speech
Synthesis ports which may be connected to any of the voice time slots on the
Time Division Multiplex (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-kbps 5-255
PCM (Pulse Code Modulation) speech. The encoded speech is stored in up to
512 Kbytes of on-board ROM. In addition, each Speech Synthesis port has an
associated dual-tone multifrequency receiver (DTMR) 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. Different voice features are supported by each circuit
pack.
MO’s Name (in
Alarm Log) Alarm Level
Initial SAT Command
to Run
1
1. UU is the universal cabinet number (1–64 for ATM PNC, 1–44 for CSS PNC). C is the carrier
designation (A, B, C, D, or E). SS is the number of the slot where the circuit pack resides (01–21).
pp is the 2-digit port number (01, 02,...).
Full Name of MO
S-SYN-PT MAJOR test port UUCSSpp sh Speech Synthesis port
S-SYN-PT MINOR test port UUCSSpp l Speech Synthesis port
S-SYN-PT WARNING test port UUCSSpp sh Speech Synthesis port
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