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NDA-24300 CHAPTER 6
Page 467
Issue 1
SYSTEM OPERATIONS
12.1.6 Manual System Changeover of Speech Path System
To changeover the ACT/STBY of Speech Path System, the CMOD command is normally used. How-
ever, if for some reason the command cannot be used, use the key operations listed below.
Note 1:
As explained in this section, the ACT/STBY of the Speech Path System can be changed over via the
MBR key on the GT (PH-GT09) card. Because each GT (GT0 and GT1) can control both the Speech
Path System #0 an #1, perform the key operation on the active GT card, not on the card in STBY mode.
Refer to Figure 6-48.
Note 2:
Figure 6-48 shows a system block diagram centering upon the GT and its controlling Speech Path Sys-
tem. By changing over the ACT/STBY of Speech Path System, all the related systems, such as TDSW/
INT, DLKC, and MUX, are totally switched over. The changeover can be executed by a key operation
on the active GT card. If the MBR key is flipped on the active GT card, all the Speech Path-related
systems (TSW/INT, DLKC, and MUX) in the same switching block are totally changed over. However,
the ACT/STBY of GT and PLO is not affected.