Touch-tone dialing – ClearOne XAP TH1 User Manual
Page 9

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5
INTRODUCTION
• CONTROLS AND CONNECTIONS
2. RS-232 This female DB9 serial port provides connection between
the XAP TH1 and a PC or custom remote control.
3. Remote This DB25 connector provides control and status of the
XAP TH1. See Appendix B for pinouts.
4. Transmit Input This Phoenix™ connection provides a non-gated
electronically balanced line level input. The nominal input level is 0
dBu. This line input is mutable. The default setting is off (not muted).
5. Receive Output This Phoenix connection provides a balanced line
level output. The nominal output level is 0 dBm. The outputs adjust
for line imbalances and maintain a constant output level. This line
output is mutable. The default setting is off (not muted).
6. Line This RJ-11 connector provides connection of a standard
analog telephone line to the hybrid.
7. Set This RJ-11 connector allows connection to a standard telephone
set. Tip and ring from the phone line are present at this connector
when the hybrid is in its Off state. Tip and ring from the phone line
are not present at this point when the hybrid is in its On state.
Touch-Tone Dialing
Through the RS-232 (and serial commands), the XAP TH1’s touch-tone
(DTMF) dialing capability can be accessed. This allows outbound calls to
be initiated by the XAP TH1 without requiring an external dialer or
telephone set. This feature continues to function after connection,
enabling the user to issue tones for voice mail/pager interaction. See
Serial Commands on page 15.