2- 9
TEL-14 TWO-CHANNEL TELEPHONE INTERFACE
echo cancellation, set option switch S6-3 to ON. To disable automatic
telephone echo cancellation, set option switch S6-3 to OFF. The
factory default setting is ON, causing automatic
telephone echo cancellation to be enabled.
Switch S6-4 DTMF Dial Guard Time:
At the start of a call when the
TEL-14 goes off hook the Echo Cancellation is frozen and the
Receive Gain is reduced to allow distortion free DTMF dialling. With
S6-4 set to its factory default position ON the DTMF Dial Guard
Time is 4 seconds. With the S6-4 set to the optional position OFF
the DTMF Dial Guard Time is extended to 10.2 seconds.
Switch S6-5 Software Compatibility:
The Software Compatibility switch
enables the TEL-14 to be backwards-compatible with Matrix Plus II
software, revisions 10 and 11. When the TEL-14 is shipped as part of
a system, this switch is set at the factory to match that system's
software revision. If the TEL-14 is shipped individually, this switch is
set to ON (compatible with Matrix Plus II, revisions 12 or higher, or
with Matrix Plus 3). If the TEL-14 is to be installed in a Matrix Plus II
system running revisions 10 or 11, you must set this switch to OFF.
Switch S6-6 Matrix Control: Note:
This switch is normally only used in
MatrixPlus II intercom systems using revision 11 software or earlier. In
later releases,this function is controlled by the "Prevent Stations From
Calling Out" option in the "Configure - Local Preferences" screen for
the telephone port.
When Matrix Control is enabled, a telephone call can be initiated
by any intercom station that has a TEL-14 port label assigned to a
selector key. Matrix Control enables the station to activate talk paths
to the TEL-14, which will cause the TEL-14 to seize the line. The
station can also pick up a call on the TEL-14 line.
When Matrix Control is disabled, stations cannot initiate telephone
calls, and can only talk on the telephone line after the line has
already been seized by the TEL-14. This may be desirable if the
interface line is dedicated to manual operation, or to answering
incoming calls automatically.
Matrix Control will be automatically disabled if:
•
The telephone line is automatically answered at the interface.
•
The telephone line is manually seized at the interface by pushing
the "Hook" button.
To enable Matrix Control, set option switch S6-6 to ON.
Switch S6-7 Half-Duplex Disable
: In extreme conditions involving very
poor telephone lines or conditions that cause instability and echo,
acceptable performance can be obtained by enabling automatic switching to
half-duplex conversation. In this mode the DSP controlling the echo
canceling will automatically determine whether full-duplex or half duplex
will result in better
operation. To restrict operation to full-duplex, set option switch S6-7
to ON. To allow half- or full-duplex modes to be automatically
determined, set option switch S6-7 to OFF. The factory default setting
is ON, restricting operation to full-duplex.
Switch S6-8 Normal / Test Mode:
This switch is only active on the Line
A card, but serves both lines. Switch S6-8 should normally be left ON,
enabling Normal Mode.
Switch S1-1 Auto Answer Ring Count:
The Auto Answer Ring Count
determines the number of times the telephone line must ring before
Summary of Contents for ECLIPSE TEL-14
Page 6: ......
