RTS TIF951, CS9500, CS9600, CS9700 User Manual
USER
MANUAL
Dual Telephone Interface
for the
CS9500, CS9600,
and
CS9700
Intercom Systems
TSTM
9350-71
54-000
Rev
B
1
/98
TIF951 Operation Guide RTS
Systems
Division
TABLE
OF
CONTENTS
General Description
..............................................................................................................
1
Installation
..............................................................................................................................
1
Connecting to the intercom.
.....................................................................................
1
DIP Switch Settings
...................................................................................................
1
Rear Panel. Switch
#l.
Auto
answer.
Ring,
asw word,
A&-.
bud
..........................
1
Internal Switch
#3.
passw~rd
&ct.
password
length
...............................................
3
Operation
................................................................................................................................
5
From a keypanel
........................................................................................................
5
Pro dn keys
.........................................................................................
5
Di&g a calf
..................................................................................................
6
Re-dialing
.......................................................................................................
7
Speed Dial
......................................................................................................
7
Answering a Call
...........................................................................................
8
Programming for use from a phone
........................................................................
7
Auto
Answer
..................................................................................................
8
Manual answer
...............................................................................................
9
Internal. Switch
#2.
Ring
count
........................................................................
2
Hanging up
.....................................................................................................
6
Using from a phone
...................................................................................................
9
DTMF codes. preassigned keys
.............................................................................
10
Programming
keys
from
the
phone
.......................................................................
11
9350-7154-000 . Rev
B
Page
.
i
Telex Communications. Inc
.
I
.
.
.
TIF951
Operation Guide RTS Systems
Division
End-User License Agreement for Telex@ Software
IMPORTANT
-
Please
read
this document carefully before using this
product
THIS DOCUMENT STATES
THE
TERMS
AND CONDITIONS UPON
WHICH TELEX COMMUNICATIONS, INC. (the “COMPANY”) OFFERS
TO LICENSE THE INSTALLED SOFTWARE OR PROGRAM (the
“SOFTWARE”) FOR USE WITH THE PRODUCT
IN
WHICH IT WAS
INSTALLED. YOU
ARE
AGREEING TO BECOME BOUND BY
THE
TERMS OF THIS AGREEMENT. IF YOU
DO
NOT AGREE TO THE
TERMS OF
THIS
AGREEMENT,
DO
NOT USE
THIS
PRODUCT.
PROMPTLY RETURN
THE
PRODUCT TO
THE
PLACE WHERE YOU
OBTAINED IT FOR A FULL REFUND.
The
installed
software
as
supplied by
the
Company
is
licensed, not sold, to you
for use only under the terms
of
this license, and the Company reserves all
rights
not
expressly granted
to
you. You own the product or other media on or in which
the Software is originally
or
subsequently recorded or fured, but the Company
retains
ownership
of
all
copies of
the
Software itself.
1.
License: This license allows you to use the Software for internal purposes
only
on
a single
product
in which it
was
installed.
2.
Restrictions: (a) You may not market, distribute or transfer copies
of
the
Software
to
others or electronically transfer or duplicate the Software. YOU
MAY
NOT
REVERSE ENGINEER, DECOMPILE, DISASSEMBLE,
MODIFY,
ADAPT,
TRANSLATE, RENT, LEASE OR LOAN
THE
SOFTWARE OR CREATE DERIVATIVE WORKS BASED
ON
THE
SOFTWARE OR
ANY
ACCOMPANYING
WRITTEN
MATERIALS.
(b)
The Software and the accompanying
written
materials
are
copyrighted.
Unauthorized copying
of
the Software, including portions thereof
or
the
written
materials, is expressly forbidden. (c) You undmtand that the Company may
update
or
revise the Software
and
in
so
doing incurs no obligation
to
furnish
such updates
to
you.
3.
Limited Warranty:
The
Company does
not
warrant that the operation
of
the
DISCLAIMS ALL
OTHER
WARRANTIES
AND
CONDITIONS EITHER
Software
will
meet your requirements or
operate
free
from error. The Company
EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF
MERCHANTABILITY,
FITNESS
FOR
A PARTICULAR PURPOSE
AND
NON-INFRINGEMENT OF
THIRD
PARTY RIGHTS.
4.
Limited Liability: The liability of the Company for any claims arising out of
this License based
upon
the Software, regardless of the form
of
action,
shall not
exceed the greater
of
the license fee for the Software or
$50.
38109-709RevA 10197
Page
-
ll
Telex
Communications,
InC.
TIF951
Operation Guide
RTS Systems Division
End-User License Agreement
for
Tele9 Software
IMPORTANT
-
Please read
this
document carefully before
using
this
product.
THIS
DOCUMENT STATES
THE
TERMS AND CONDITIONS UPON
WHICH
TELEX COMMUNICATIONS, INC. (the “COMPANY”) OFFERS
TO LICENSE
THE
INSTALLED SOFTWARE OR PROGRAM (the
“SOFTWARE”) FOR USE WITH THE PRODUCT
IN
WHICH IT WAS
INSTALLED. YOU ARE AGREEING TO BECOME BOUND BY THE
TERMS OF THIS AGREEMENT. IF YOU DO NOT AGREE
TO
THE
TERMS OF THIS AGREEMENT,
DO
NOT USE
THIS
PRODUCT.
PROMPTLY RETURN
THE
PRODUCT TO THE PLACE WHERE YOU
OBTAINED IT FOR A FULL REFUND.
The installed software
as
supplied by
the
Company
is
licensed, not
sold,
to you
for use only under the terms of this license, and the Company reserves all rights
not expressly
granted
to you.
You
own
the product or other media on or in which
the
Software
is originally or subsequently recorded or fvred, but the Company
retains ownership
of
all copies of the Software itself.
1.
License: This license allows
you
to use the Software for internal purposes
only on
a
single product in which it was installed.
2.
Restrictions: (a) You may not market, distribute or transfer copies
of
the
Software to others or electronically transfer or duplicate the Software. YOU
MAY NOT REVERSE ENGINEER, DECOMPILE, DISASSEMBLE,
MODIFY,
ADAPT,
TRANSLATE,
RENT,
LEASE OR LOAN
THE
SOFTWARE
OR CREATE DERIVATIVE WORKS BASED ON
THE
SOFTWARE OR
ANY
ACCOMPANYING
WRITTEN
MATERIALS. (b)
The
Software
and the accompanying
written
materials
are
copyrighted.
Unauthorized copying of the
Software,
including portions thereof or the written
materials, is expressly forbidden.
(c)
You understand that the Company may
update or revise the
Software
and
in
so
doing
incurs
no obligation
to
fimish
such updates
to
you.
3.
Limited Warranty:
The
Company does
not
warrant that the operation of the
DISCLAIMS
ALL
OTHER WARRANTIES
AND
CONDITIONS EITHER
Software will meet your requirements or
operate
free
from error. The Company
EXPRESS OR IMPLIED, INCLUDING
THE
WARRANTIES OF
MERCHANTABILITY,
FITNESS
FOR
A
PARTICULAR PURPOSE
AND
NON-INFRINGEMENT OF
THIRD
PARTY RIGHTS.
4.
Limited Liability: The liability of the Company for any claims arising out of
this License based upon the
Software,
regardless
of
the form of action, shall not
exceed the greater
of
the license fee for the Software or
$50.
381
09-709
Rev
A
10197
Page
-
11
Telex Communications,
InC.
SW
#
1
2
3
4
5
6
7
8
TIF951 Operation Guide
RTS
Systems Division
SECTION 1: GENERAL DESCRIPTION
The
TIF!35
1
connects a pair of telephone dial tone lines to the CS9500/CS96OO/CS9700 series intercom
systems. Each of the two telephone lines occupies an
input/output port in the intercom matrix, and
each channel occupies one key panel data address.
The
TIF951 provides general purpose control and interfacing for telephone lines. Each telephone
interface channel may be used to dial out from any key panel, auto answer incoming calls, or accept
incoming calls to be answered by key panels.
SECTION 2: INSTALLATION
2.0
Connecting the "951 to the intercom.
Each channel of the TIF95 1 connects to the matrix in exactly the same way as an intercom key panel.
If
your system utilizes the XCP954 cross connect panel, you may plug the "IF95 1 directly in
using
a
3
pair cable with DB9 connectors at each end.
If
your intercom uses the XCP955
cross
connect panel, you may use the DB9 to
RJll
adapters which
are supplied in the accessory
kit packaged with the
TIF95
1.
In
the event you need to make your
own
adapter, the wiring is as follows (these adapters are readily available from companies which sell
computer wiring accessories):
RJll
DB9
1
(blue)
2
Data
-
2
(yellow)
8
TIF
input
+
4 (red)
5
TIF
output
-
5
(black)
7
TIF
input
-
6 (white)
1 Data
+
3
(green 4
TIF
output
+
RJ
11
SOCKET
(FEMALE)
*
Note, twist the wires, white with blue, black
with
yellow, red with green
2.1 DIP Switch Settings
The rear panel DIP switch contains switches to configure the most often changed options. These
include auto answer mode, ring
signal mode, password mode, intercom port address (key panel
number), and baud rate.
2.1.1
Rear
panel DIP Switch #1:
DIP switch 1 (rear panel) settings:
Auto Answer
Generate Ring Signal
Password Required
Address
Address
Address
Address
Baud Rate
9350-7154-000 - Rev
B
On (down)
Yes
Yes
Yes
1's
2's
4's
8's
76800
Page - 1
Off
(UP)
no
no
no
9600
Telex
Communications, Inc.
TIF951 Operation Guide
RTS Systems Division
DIP switch
1,
address
settings:
Address Settings: Rear DIP Switch, Switch # (down is on, up is
off)
Port Number
1,
11,21,
etc
2, 12,22,
etc
3, 13,23,
etc
4, 14,24,
etc
5,15,25,
etc
6,
16,26,
etc
7, 17,27,
etc
8,
18,28,
etc
9, 19,29,
etc
10,20,30,
etc
4
on
Off
on
Off
on
Off
on
off
on
Off
5
6 7
Off
on
on
Off
Off
on
on
Off
Off
on
Off
Off
Off
on
on
on
on
Off
Off
Off
off
off
Off
Off
Off
Off
Off
on
on
on
AUTO
ANSWER
mode will set the unit to answer the phone automatically when it rings. The number
of rings required before it answers is set on internal DIP switch
#2.
If
set for manual answer, the line
will
ring until someone at a key panel answers the call.
GENERATE
RING
SIGNAL
sets the unit
so
that when the phone line is ringing, certain designated
key panels or circuits will receive an audible ring signal.
PASSWORD REQUIRED
sets the unit
so
that when a call is automatically answered, it will require
that the user enter a password via DTMF before the unit will allow communications. The actual
password is set using internal DIP switch
#3.
PORT ADDRESS
tells the unit and the intercom which matrix inputs and outputs belong to the
TIF.
The settings are the same
as
for a key panel. The setting is the binary representation of the last digit
of the matrix
input/output number which that channel
of
the
TIF
is connected. See the address table
above for the actual settings.
BAUD
RATE
sets the data rate with which the
TIF951
communicates with the intercom. The data
rate for all
CS9500
intercom matrices is
9600
BPS
(switch
off).
The
data
rate for all
CS9600
and
CS9700
matrices is
76.8K BPS
(switch on).
2.1.2
Internal DIP switch
a:
DIP switch
#2,
which is located internally to the unit sets the number of rings before the unit auto
answers. Please note that the ring count is approximate.
This
switch has no effect unless the rear panel
DIP
switch is set for auto answer mode.
If
the ring count is set for a high number
(8),
and auto answer
is enabled, the unit may be used for mixed mode operation, where key panel operators normally answer
the incoming call, but the line will auto answer in the event they are away from their panels.
9350-7154-000 - Rev
B
Page - 2
Telex Communications, Inc.
TIF951 Operation Guide
RTS
Systems Division
DIP Switch
#2
(internal):
1
2
3
4
5
6
7
8
DIP Switch
#2,
Ring Count settings
Rings Internal
DIP
SW2,
Switch # (down is
on,
up
is
off)
‘1
2
1
2
4
8
off
off
on
off
off on
on
on
2.1.3 . Internal DIP switch
#3:
DIP switch
#3,
which is located internally to the unit selects the password. It has
no
effect
unless password required has been enabled
on
DIP switch
#1
(rear
assword required is enabled, the password must be entered
via
DTMF
by t iane1)* e caller before
When
[e
may communicate. This is to prevent unauthorized use
of
the intercom by callers.
Switches
7
and 8 select the length of the password, from 1 digit to 4 digits.
If
set for 1 digit,
only the first digit
of
the password
is
used,
if
set for 2 digits, then the first 2 digits are used
etc.
DIP Switch
#3
(internal):
1
Password select
2
Password select
3
Password select
4
Password select
5
Password
select
I
6
Password select
7
Password length
8
Password length
9350-7154-000 - Rev
6
Page - 3 Telex Communications, Inc.
TIF951 Operation Guide
RTS
Systems Division
DIP Switch
#3,
Password settings
Internal DIP
SW3,
Switch
#
1
Off
on
off
on
off
on
Off
on
Off
on
Off
on
Off
on
Off
on
Off
on
Off
on
Off
on
Off
on
Off
on
off
on
off
on
Off
on
Off
on
Off
on
Off
on
Off
on
Off
on
Off
on
Off
on
Off
on
Off
2
Off
off
on
on
off
Off
on
on
Off
off
on
on
Off
Off
on
on
Off
Off
on
on
Off
Off
on
on
Off
Off
on
on
Off
Off
on
on
Off
off
on
on
Off
Off
on
on
Off
Off
on
on
Off
Off
on
on
Off
3
Off
Off
Off
Off
on
on
on
on
off
Off
Off
Off
on
on
on
on
Off
Off
Off
Off
on
on
on
on
Off
Off
Off
Off
on
on
on
on
Off
Off
Off
Off
on
on
on
on
Off
Off
Off
Off
on
on
on
on
Off
4
Off
Off
Off
Off
Off
off
Off
Off
on
on
on
on
on
on
on
on
Off
Off
Off
Off
Off
Off
Off
Off
on
on
on
on
on
on
on
on
Off
Off
Off
Off
Off
Off
Off
Off
on
on
on
on
on
on
on
on
Off
5
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
6
Off
Off
Off
Off
Off
Off
Off
Off
off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
off
Off
Off
Off
off
Off
Off
Off
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
9350-7154-000 - Rev
B
Page
-
4
Telex Communications, Inc.
TlF951 Operation Guide
DIP Switch #3. Password settings. continued
RTS Systems Division
1
on
off
on
Off
on
Off
on
Off
on
Off
on
Off
on
Off
on
--,
~~
Internal DIP SW3: Switch
#
2 3
4
off
off off
on
off
off
on
off off
off
on
off
off
on
off
on
on
off
on on off
off
off
on
off
.
off
on
on
off on
on
off
on
off
on
on
off
on on
on on on
on
on on
5
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
off
Off
off
6
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
DIP Switch #3, Password Length
Internal DIP SW3 Switch
#
Length
7
8
4
3
2
1
off
off
on
off
off . on
on on
SECTION
3, OPERATION
3.1 OPERATION
FROM A KEY
PANEL
The
TIF951
is operated from the intercom key panels, and from the
dial
pad
on
the
telephone at the remote end of the line. Any key panel with
a
key pad may use
a
TIF951.
All that is necessq
is
to program a
key
to talk to
the
TIF951,
as
if
it were a key panel.
The alpha numeric display or tally LED for that key then provides information about the
phone line.
A
solid display or non illumined LED indicates
a
line
which
is
not
in
use.
A
slow flash indicates a hne which
is
in
use
(off
hook). A rapidl
flashixl~
display
or
LED
indicates a line which
is
M
g.
In
addition, the alpha numeric &play
wd
display digits
as
they are dialed, and the LE
f.?
will
flash
for each digt.
3.1.1 Programming a key
to
use
the
"951.
To
use the
TIF951,
either to answer a call, or to call out, you
first
need to program a key
to
talk to the
TIF951.
This
is
accomplished
in
the same manner
as
pro
ammine
a
ke to talk
to
a
key
anel.
To
program a key by port number, enter
NUM-nnn-
GM-t,
where
hJM
is
the num er 1 key,
nnn
is
the port number
of
the
TIF951
you
want
to
use,
and t
is
any
talk
!
F
9350-7154-000 - Rev
B
Page
-
5
Telex Communications, Inc.
TIF951 Operation Guide RTS Systems Division
ke
.
In
general, you will
also
need to use the listen
key,
S
O
it should be assigned
as
either
d
(auto follow), or
AL
(auto listen).
Note that the TIF951 only responds to commands which are sent via a point to point key
assignment.
If
you wish to
use
the
TIF951
primarily on a
PL,
you must add a point to point
assignment
as
the
L2
talk assignment on the talk key for any panels which are going to
either answer the line, or dial out on the line.
3.1.2
Dialing
a
call:
Any key panel may dial calls on the TIF-951.
To
dial a call on the
TIF951:
1.
Turn
on the listen key for the line you wish
to
dial
on.
This
will
allow you to hear
dial tone, and your
DTMF
dialin tones.
2.
Enter dial mode by entering P
w
ONE-PGM-T.
PHONE
is
the 4 button
on
the
keypad. PGM is the red PGM key
on
the key pad, and
T
is
the talk key which
is
programmed to talk to the "IF951 you
are
dialing
on.
Leave the talk key
in
the up
engaged position
as
you dial the number.
3.
Dial the number.
As
you enter each digit, it will appear
in
the
alpha display above
the ke you
are
dialing
on.
On
panels with
LED
tally,
the
LED
will
flash
on
each
digit.
P
f
the listen key
IS
engaged, you will hear each
DTMF
tone
as
it
is
generated.
4.
When you have completed dlaling, momentarily disengage the talk key
to
exit dial
mode. The alpha numeric display will revert to
normal,
and you may use the key
and key pad in the normal manner.
Note: The key pad is used in the
usual
way. Digits
0-9
generate the
DTMF
digits
0-
9.
PGM generates
#,
and CLR generates
*
(*
and
#
are
displayed for these keys).
If
the last number redial/speed dial option
is
resent,
it
is
necessary to press
CLR
twice
if
you wish to generate a
*,
as
a
single
CF
LR is used to trigger the speed dial
and redial features.
3.1.3
Hanging
up:
The TIF951 will detect that the caller at the
far
end has hung up under most circumstances.
It detects the hang up by either loop interrupt, battery reversal, or the presence
of
dial
tone. Some telephone systems do not provide any
of
the above,
so
it
will
be necess to
force a hang up.
In
addition, if the call
was
placed to an auto answer device, it 3 be
necessary
to
force a hang
up
when the
call
is
complete.
Enter PHONE
-
CLR-t, where
PHONE
is
the 4 button
on
the
key
pa4
0
is
the
0
button, PGM
is
the red
PGM
button, and
t
is
the talk key which
is
programmed to
talk
to the
'IF951
which you
wish
to
hang
up.
This
will
disconnect the line for
which you struck the
talk
key.
Note that if the talk
key
is in
the
on
position, you must
turn
off
the key, then
momentarily turn it on again to indicate which
line
you wish
to
disconnect.
If
the
line is in dialing mode, then you must first exit dialing mode by
turning
off
the key,
then use PHONE-CLR-t
to
hang up.
9350-7154-000
-
Rev
B
Page
-
6
Telex Communications, Inc.
TIF951 Operation Guide
RTS Systems Division
3.1.4
Re-dialing the last number:
The TIF951 remembers the last number which it has dialed.
1.
Enter dialing mode
by
following the instructions for dialing a
call.
2.
Enter
CLR-0-0.
The
TIF
will automatically redial the last number it dialed.
3.
Momentarily release the talk key to exit dialing mode.
Note that the number is remembered on a phone line by phone
line
basis. When the last
number redial command is issued, you
will
get the last number dialed on that TIF951
channel, regardless of which key panel dialed the number.
For
example,
if
you have a call
to 818-566-6700 on channel
1
of the
TIF,
and a call to 201-891-6002
on
the other channel,
and you are disconnected, issuing the redial command
will
re-establish the calls on the
same channels. The redial command may be issued
from
any key panel in the intercom,
not just the key panel that originally dialed the calls.
3.1.5
Dialing a Speed Dial number (stored number):
The TIF951 has
32
internal memories for storing frequently used phone numbers.
To
dial
one of these numbers:
1.
Enter dial mode.
2.
CLR-M
where
CLR
is the clear button
on
the key pad, and
M
is
two
digits, wlich
3.
Momentarily release the talk key to exit dialing mode.
are the speed dial code.
3.1.6
Storing a speed dial number:
1.
After dialing the number the usual way, enter the
CLR-PGM-nn
before .you release
2.
Momentarily release the talk key to exit dialing mode.
the talk key to exit dialing mode.
Note:
To
generate a pause during auto dial, enter *99.
This
is
used for example if
you need to enter
a
digit to get an outside line, and your phone system requires a
pause before continuing to dial.
Each number may contain
up
to
30
digits. Note that the memory for the stored numbers
is
RAM
in
the
TIF951.
The
numbers are unique to each TIF951 channel, and each TIF951
channel can have different numbers stored
in
it. If you plan
to
use the speed dial feature, it
is
advis,able to supply the TIF951 with
UPS
power, to prevent loosing the speed dial
information when
the
power fails.
9350-7154-000 - Rev
B
Page
-
7
Telex Communications, Inc.
TIF951 Operation Guide RTS Systems Division
3.1.7
Answering
a
call:
1.
When a line
is
ringing, the alpha numeric display or
LED
above the talk
key
which
is programmed for that line will
flash
rapidly.
2.
To
answer the call, first
turn
on the listen key, then press the talk key and speak into
the microphone or headset.
3.
If
you have been programmed
as
a default station, your panel
will
"
ring
"
when ever
one of the lines rings.
If
you do not have a key already programmed, the
ringing
line
will a pear
on
your incoming call key (the key farthest to the right
on
the main
panelf:
To
answer, press
the
incoming call key and answer.
You
should copy the
key to main key position, either just before or just after you answer,
so
you can turn
on
the listen
key
to hear the caller audio.
3.2
TIF951
SYSTEM
SETUP
TO
RECEIVE
CALLS
To
the intercom system, the TIF951 is very much like a key anel.
I€
the phone lines are to
be used for outgoing calls only, then
no
programming in CS
k
DIT
is necessary. If users are
going to phone into the intercom from the outside, then the
TIF951 needs to be configured
to allow them to use the phone line in much the same way a local user
uses
his
key panel.
Programming information for the phone line is entered into the CSEDIT software just
as
if
the TIF951 were
an
ordinary key panel, by selectin 'Ke
s"
from the main menu, then
selecting the
TIF951 from the pick list of key panels.
he
AF951 o erates much the same
.
way
as
a key panel, except that the "keys" are really the D &buttons
on
the users
telephone.
32.1
Auto
Answer
Mode:
To
use the
TIF951
in auto answer mode, you must first enable auto answer mode on the
rear panel DIP switch, toggle number
1.
You
may
also
wish to enable Password required,
toggle number
3.
In addition, you may select the number
of
rings before the
unit
answers
(internal DIP switch
#2),
and the actual password (internal
DIP
switch
#3).
When the caller dials into the
TIF951,
he
will
hear the line ring, then the unit
will
answer,
and beep to request the pass word
(if
password re uired is enabled). The user then must
enter the password. The
-
unit
will
beep once to co
2
'rm a proper password.
If
the password
is not correct, the unit
will
beep twice
to
allow another
try.
Once the password has been entered, the
TIF951
will
establish communications
on
key
#1
automatically.
From
CSEDIT,
this
will
be talk and listen keys
#l.
If
for exam
le
the
user
were a camera operator, it
mi
ht be desirable to program the camera PL
as
ta%
and listen
on
talk and listen keys
#l.
if
the caller were a reporter, you might program
an
WE3
on
listen key
#1,
but
no
talk
on
talk key
#l.
Keys
2
to
7
may also be programmed.
To
use
the other
ke
s
from
the phone, just press the
DTMF
button for the
key
you
wish to use. For example, 2 key
#1
was
the camera PL, and
you
have
finished with the
shot,
you may press
#1,
which
will
toggle
off
key
1.
If
master
control were pro rammed on key
#2,
you
may then press 2 and
call
master control.
Likewise, you
mi&t have
an
IFB
programmed on listen
3,
with
no
talk.
If
you press
3,
ou
will hear
the
IFB.
#4
could have an
IFB
talk
on
it,
to allow a caller
to
speak on
an
P
Fl3
circuit.
Each DTMF button acts
as
if
it
were a push on/push
off
switch. When programming in
9350-7154-000 - Rev
B
Page
-
8
Telex Communications, Inc.
TIF951 Operation Guide RTS Systems Division
CSEDIT,
just program the same key number
as
the number the user
is
going to press
on
the telephone to speak.
Talk
keys 8 to
15
have a special purpose.
If
you are not using auto answer mode, but have
set
u
the TIF951 to be manually answered, talk keys 8 to 15
will
be programmed for the
pane
P
s
which are to receive the ring signal. They may also be toggled
on
and off from the
phone by
DTMF
8,
so they may
be
used in auto answer mode
as
well.
You
may program
only key
8,
in which case it will behave the same
as
keys
1-7.
You
may also program
additional panels,
PL's,
IFB's etc on keys 9-15, and they
will
be activated simultaneously by
the
8
button on the phone.
3.2.2
Manual Answer Mode:
In manual answer mode,
the
line will ring until it is answered from a
key
panel. In general,
you must designate panels which are to receive the
"
ring",
so
they
can answer
the
line.
When
a
line is manually answered, the caller does not have to enter a password, even if the
password required switch is turned on.
You
may
mix
modes by enabling auto answer, but
setting
the
ring count for 8 rings. If no user has answered the call by 8 rings, the
TIF
will
then automatically answer the call, and if password required
is
also enabled, the call will be
screened by requiring a password.
To
use manual answer mode, you may choose to program keys 1 to
7
as
above
if
you wish.
When the phone is manually answered, key one will not be automatically activated, but the
caller may activate any of the keys if he wishes.
You
must also designate the panels which are going to ring when the line rings. Program
these panels on keys
8
to
15,
using both L1 and
I2
If
you have more than
8.
It is generally
not necessary to program the listen keys
on
these positions. When the line rings, the
TIF951 will "call" these panels when the line
is
ringing. When the
line
rings,
the
TIF951
generates a ringer noise which is then transmitted to these panels. The panels
will
display
the
TIF95l's alpha numeric
in
the incornin$ call window, and if a talk key has already been
programmed on the panel, it's alpha
numenc
will
flash rapidly.
3.3
Using the
TIF951
from
the telephone:
The TIF951 will behave differently depending on how it is programmed. It is up to the
operator who programs the
TIF951 to convey to the user what to expect.
If
the user is not
familiar with the operation of the
TIF951, it is best keep the operation
as
simple
as
possible, until they are familiar with
its
operation. For this reason, It is suggested that you
not use assword required unless you have had problems with nuisance calls
in
the past.
If
the
TIF
8
51
field user only requires one service, it is best to program that service on key
1,
enable auto answer, and disable password required. The telephone user
will
then only
have to dial the proper phone number to use the interface.
As
they become more familiar
with it's operation, you can then begin
to
offer more options to the
users,
or begin to
require a password.
In general, it is very easy to use,
if
the user has knows what to expect.
When calling in,
if
the unit
is
in
auto answer mode, it
will
answer the call after the number
of
rings whch have been selected.
If
assword required
is
not
enabled, the unit
will
indicate it
is
ready with a single beep. E password required
is
enabled, the TIF951 will
prompt for
a
password with 2 beeps. The user
will
enter the password, and the unit will
9350-7154-000 - Rev
B
Page - 9 Telex Communications, Inc.
TIF951 Operation Guide
RTS
Systems Division
beep once if
the
password was correct, twice
was
wrong. The user
is
allowed 3 attem
ts
to
enter the password, after which the
TIF951
will
disconnect.
In
the event a user
Cass
the
TIF951
when the intercom system is either turned off or absent, the TIF951
will
answer
prompt
with
3
beeps.
Once the password is entered, the
TIF951 will enable
talk
and listen
on
key
1.
This should
be
pro rammed ahead of time to what ever communications the caller generally needs
first.
I
f
it is not desirable for the caller to be able to talk
at
this
point, then
only
the listen
key for key
1
should be programmed.
The caller may then either continue to use
key
1,
or he may
select
other keys with his
DTMF
pad. He may turn off key 1 by pressing
DTMF
1,
or may continue to just add other
keys. At any time, the caller may turn
off
all keys without hanging up
by
pressing
0.
When the call is complete, the caller should enter
*#,
which
will
cause the TIF951 to
disconnect. This
is
more reliable than waiting for the phone system to pass the disconnect
information to the
TIF951.
33.1
DTMF
codes
Once programmed
as
described in section
3.2,
the TIF951 may be o erated via the
DTMF
Touch Tonetm
key
pad
on
the telephone. The
DTMF
keys have the P ollowing
functions:
Normal
Mode:
1
thru
7
Toggle
on
and off talk and listen
#1
to
#7.
Note that initially,
#1
will
be enabled
if
the unit auto answered
the
line.
8
9
0
*1
thru
'7
*8
*#
To
e
on
and
off
talk and listen to the panels which ring when
the
T
'ne is ringing.
This
allows the caller to ''recall" the panels
without having to hang up and redial.
Togglmg this
on
will
allow
the callers voice
to
be heard from
all
the panels which
normally ring.
Enters programming mode, to reassign keys.
Turn
off
all talk and listen keys. Since
1-8
are
toggles, it
is
possible to forget which keys
are
"on"
and which
are
"
off".
In
this
case,
just press 0 to
turn
then
all
off,
and
start
over.
Toggle
on
and
off
listen
1-7.
By pressing * before the key, you
onl
chan e the listen.
This
allows
you
to listen
to
a
circuit
wi
Jaf
out t king to it, or
to
talk
to
a
mcuit without listening to
it. Note that you
will
automatically listen and talk to
#1
if
the
TIF951 auto answered the
line.
Toggle
on
and
off
listen for 8-15.
Disconnect.
This
will
cause the
TIF951
to hang
up.
It
is
a
good idea
to
do this before you hang up,
as
many phone
systems take
a
long time to
signal
that the
far
end has
hung
up.
9350-7154-000
-
Rev
6
Page - 10 Telex Communications, Inc.
TIF951 Operation Guide
Programming Mode:
lnnn#K
2
M#K
01~#K
02M#K
03nn#K
WM#K
3
5#K
lnnn#*K
2
M#*K
3
2#*K
3
3#*K
01
M
#
*K
02
M
#
*K
03
M
#
*K
WIlXl#*K
*9
*O
*#
RTS Systems Division
You
may reprogram the talk and listen assignments on
1-7,
just
as
you can on a key panel
(if
they are not restricted via
CSEDIT).
Note that the se uences are the same
as
the
sequence you would use
from
a
‘fc
ey panel, except that you must
first enter programming mode by pressing
9.
Program a
talk
key to a point to point.
Program a talk key to a
PL.
Program a talk key to a special list.
Program a talk key to an
IFB.
Program a talk key to an
ISO.
Program a talk key to a Relay.
Program a
talk
key to
All
Call
(turns
on
the lower numbered
talk keys)
Program a listen key to a point to point.
Program a listen key to a
PL
Program a listen key to Auto Follow
Program a listen key to Auto Mute
Program a listen key to a special list.
Program a listen key to an
IFB.
Program a listen key to an
ISO.
Program a listen key
to
a Relay.
Exit
programming mode
Exit programing mode and turn
off
all
talk & listen.
Disconnect
Note:
0-9
are the number keys, * and # are
the
star and pound keys.
nnn
is three digits for a key panel number
M
is
two
digits, for an
IFB,
PL,
Relay, Special
List,
or
ISO.
K
is a key which you are programming,
just
press the digit
(1-7).
*K
is the * key followed by a digit
(1-7).
This
is
used to represent the listen
key.
9350-7154-000 - Rev
B
Page - 11 Telex Communications, Inc.
Telos
ONE
plus
ONE
Dual Digital Telephone Interface
User's
Manual
1.1
I'
Telos Systems 2101 Superior Avenue Cleveland,
OH
441 14
(216) 241
-
7225 FAX: (216) 241-4103
0
Copyright 1991 by TLS Corporation
.
..I
July
10,1989
A
personal
note:
You
have in your possession a remarkable piece of technology. The Telos One
does what would have been either impossible or impractical only a few years
ago. It relies on
digital signal processing,
a concept
known
to theorists for
years but only very recently available to
us
as
users.
It
is
entertaining to read the
signal
processing textbooks written
as
recently
as
the mid
70s.
The authors describe the state of the
art:
a
few seconds of audio
is
collected
and
processed with
FORTRAN
programs running on million dollar
mainframe computers. Only after minutes (or hours!) of expensive number
crunching did the expectant researchers get to
actually
hear
the brief audible
result.
About the same time,
yours
truly began
his
first
radio
station job. Using
phones on air was always a problem owing to the
familiar
shortcomings of
speakerphones and hybrids. Thus began what was to become many
years
of
tinkering with telephone interfacing. Nothing had worked
-
resulting in
discouragement having become firmly rooted when, in
1983,
articles describing
practical
real-fzme
DSP
began to appear in obscure
journals.
This
was made
possible by the introduction of
single-chip processors optimized for
use
in
manipulating analog
signals.
They cost
$350
-
but I sensed that their
availability signalled the beginning
of
a revolution. The next year and a
half
found me at work weekends and evenings learning the exciting new technology
and experimenting with telephone interfacing approaches using it. By late
1984,
the now famous Telos
10
was the result.
It had the singular virtue among available interface devices that it
acfually
worked.
At last
it
was possible to carry on a
natural
on-air conversation
without the common
up-cutting or distortion difficulties. We put it on the
air
at
WFBQ,
Indianapolis and made a few for
friends.
Slowly, the word spread.
Since
I
was happily employed
and
thus had no compelling interest in Telos'
economic success, it was only amusing
to
observe the digital hybrid technology
take the usual path of any new idea to eventual acceptance:
c
It
wasignored
It
was
accused
(by
other interface
manufacturers)
Of
being
ineflecfive
It
was
accepted
by
users
with tolerance for
tisk
and
novelty
It
was
accepted
by
large
numbers
of
users
It
was
co-opted and copied!
For
a couple
of
years, Telos Systems was operated
as
a
sideline enterprise
while
I
continued to work
as
a
CE.
However,
as
is
now evident,
increasing
sales
caused Telos
to
grow beyond its "garage
"
origins
to become a bona-fide
broadcast manufacturer, adding staff, an office, phones, and
an
occasional ad.
I
finally
even
had
to quit my
job!
Our
research
continued and resulted
a
little
over a year ago
in
the
second
generation Telos
100
hybrid - which advanced the state
of
the
art
by
sigruficantly improving performance
and
taking advantage of
DSP
for the
dynamic processing
functions.
So
here we are
in
the present. The
work
of
the signal processing
theorists
for
decades (actually, centuries Fourier was at it a few hundred years ago!),
our
continuous work over the course
of
the
past
six
years, and the near-incredible
advances
in
digital audio and lowcost computing power have
combined
to
allow the creation
of
a result even
the
digital dreamers would have
been
shy
to predict a decade ago.
We
trust
you
wili
like
it.
Keep
on
keeping
the
GM
happy...
Steve Church
President
I
User's Manual
V1.l
Telos
One
plus
ONE
Dual Digital Hybrid Telephone Interface
1
INTRODUCIlON
1
1.1
Overview
2
1.2
Specifications
6
2
INSTALLATION
7
2.1
Audio
9
2.2
Connection to the Telephone
Line
13
2.3
RemoteControl
13
2.4
Power
Source
14
3 OPERATION 15
3.1
Front Panel Controls
16
3.2
Metering and Level Adjustment
18
3.3
Feedbackcontrol
19
4
TECHNICAL DATA
and
TROUBLESHOOTING
21
4.1
Overview
22
4.2
Digital Section
25
4.2.1
Theory of Operation
25
4.2.2
Troubleshooting the Digital Section
26
4.3.1
Theory of Operation
26
4.3.2
Troubleshooting the Audio Section
27
4.3
Audio Section
26
4.4
Power Supply
27
4.5
IntemalConnections
28
Connector Pinout
Charts
31
Parts List
32
5
DRAWINGS 35
Signal Flow Block Diagrams
schematics
6
APPENDIX
Alternate Software Versions
Warranty and Application Caution
Power Supply Data Sheets
ACCESSORY
PCB
MODULES:
DTMF-to-ROTARY CONVERTER
BASIC AUTO
-
ANSWER
"
SUPER" AUTO-ANSWER
ELECIRONIC PHONE SYSTEM TUTORIAL
'0
SECTION
1
INTRODUCTION
1.1
OVERVIEW
The Telos
ONE
plus
ONE
Dual
Interface
The Telos
ONE
plus
ONE
consists of
two
Telos One digital hybrids
in
one
19
rack mount
enclosure.
The Telos One interface embodies a state of the art approach to
interfacing telephone
lines
for broadcast on-air, intercom interface,
or
teleconferencing use. The very fast and precise digital
automatic nulling hybrid allows smooth, natural, simultaneous
conversation without the
usual
speakerphone upcutting effect or
the audio distortion
and
feedback problems often experienced with
poorer hybrid
-
type interface devices.
As
well, a number of additional functions are accomplished in the
digital domain
in
order to enhance "real-world'' performance.
Included are sophisticated automatic gain control
in
both the send
and receive paths, a carefully
-
implemented override ducking
system, and a pitch shifter for feedback reduction.
Telephone connections
are
via standard modular jacks, while audio
input and output are connected via
XLRs.
Each hybrid
has
one
balanced input with provision for mic or line levels and
two
balanced outputs. The second output may
be
switched to
be
either a
second isolated output or a
mix
of the send and caller
signals.
Purpose
The purpose of the Telos One broadcast telephone hybrid
is
to
deliver
to
the receive output pure caller audio
with
as
little
of
the
send (announcer) audio
as
possible mixed-in. Until digital
signal
processing techniques were applied to the telephone interface
problem, there were
two
choices:
Switching.
The send and receive paths were separated by
having only one talk direction active at a time. The
common
"
speakerphones" use this approach. The
disadvantage
is
that natural conversation is impossible,
since the caller
is
cut-off when the announcer talks - and
vice
-
versa.
2
Tebs
ONE
plus
ONE
-
INlRODUCTION
Analog
hybrids.
These were, on most phone lines,
very
poor at removing the send signal from the caller's audio.
This
meant that the announcer's voice would become
distorted
as
the phone audio was added to the
mix.
(A
full discussion of hybrids and interface systems
is
included in
the
Telos Telephone
Q
b
A.)
The Telos One is a
true digitul
second generation telephone
interface. It
uses
state-of-the-art digital techniques to perform
the hybrid function
-
the subtraction of the
send
from the receive
audio. The input and caller audio signals are converted to digital
.
and operated on in
such
a way
as
to very effectively remove the
send audio from the output while maintaining natural
simultaneous full
-
duplex conversation. The digital approach
assures consistently good trans
-
hybrid loss regardless of varying
phone
line
impedance.
Special Features
The Telos One incorporates sophisticated audio processing
in
the
digital domain
for
gain
control and filtering.
A
digital high-pass filter
is
used
to reduce hum and other low
frequency interference. High frequency noise above the telephone
frequency range
is
also
attenuated.
FREQUENCY
Te
ONE
plus
ON€
-
INTRODUCTION
3
Smart
Digital
Automatic
Gain
control smooths input and output
levels.
A
noise-gate/downward expander
is
provided on the
receive path to reduce phone line noise during caller pauses.
A
switchable
mm*de
function
is
provided to allow ducking of
the caller while the announcer
is
speaking. The override function
includes an
acousfic
ducker
which dynarmcally reduces send audio
when caller audio
is
present
in
order to reduce feedback and aid
natural conversation.
Unique to the Telos One
is
a
special feedback reduction function
using a pitch
-
shifting approach. The input (send) audio
is
shifted
downward
in
frequency
by
4
Hz
to help prevent feedback build-up.
Front panel metering
is
provided for input level, output level,
and
gain
reduction.
Operation
When a call
is
initially established, a brief mute/adapt period
provides
an
opportunity for the system to set up to
the
line before
the
call
is
passed to the output. The caller hears a "noisy tone,
"
but none of
this
tone
is
heard at the output since the output
is
muted
during
this
time.
This
has
the incidental benefit of removing the
line switching
"
clunk." Adaption to the telephone line
characteristic continues
as
the conversation proceeds using voice
as
the driving
signal.
The
Hardware
The
process
of analog-to-digital and digital-to-analog conversion
is
critical to audio quality and hybrid performance.
In
the Telos
One,
IC
converters
called
CODECS
intended for telephone central
office application
are
employed. The
ICs
in the Telos One are
better than the usual telephone
CODECS
in that they use an
oversampling and digital filtering technique
for
the anti-aliasing
and
reconstruction filters rather
than
the usual mitched-capacitor
filter approach.
Thus
noise and distortion are quite
good.
Because the audio processing
functions
are performed in
the
digital
domain, the hardware design of the Telos One
is
quite simple.
Multi-Line
Systems
Telos makes interface modules for multi-line switching. The
Direct Interface Module offers a convenient
and
flexible means to
switch up to
10
telco
lines
with provision for program-on-hold,
additional telephone sets for off
-
air conversation, etc. The
1A2
interface module is for use within a standard
1A2
key telephone
environment.
A
number
of
options
are available with regard to
interface methods, control panels, etc. Please contact
us
for details.
In addition, the
"
Super" Auto-Answer
PCB
module may be
configured
so
that the Telos One
may
be connected directly to
1A2-
style telephones with the telephone itself being
used
as
the line
selection device.
In some cases, the Telos One
may
be interfaced to "electronic
"
telephone systems. There
is
a tutorial on these phone systems
included later
in
this
manual which should be helpful to those
who wish to do this.
I
Te&
ONEPIUS
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IMRODUCTION
5
1.2
SPECIFICATIONS
System
True digital.
Second
generation Texas
Instruments
TMS320C25
processor.
8
lcHz
sampling rate. Internal digital input and output
gain
processing, filtering.
Trans-hybrid
Loss
>40
dB with pink noise or voice
as
test input. Test set-up
as
specified
in our
Telephone Q6.A. All dynamic enhancement processing is
sm'tched
off.
With the ovemde and output expander
functions
switched-in, trans-hybrid
loss
is
enhanced by approximately 12 dB.
Send Level
to
Phone
Line
-
10 dBm average level. Maintained by intemal digital AGC.
Frequency Response
(caller
to
output)
200
-
3400
H
Z
+-1
dB.
Noise
and
Distortion
(caller
to
output)
Distortion:
c.5%
THD
+
N.
1
kHz;
caller
levels from
-
48
to
-
8
dBm.
Signal-to-Noise:
>60
dB.
Referred to
-
18
dBm phone Iwel. >72 dB
ref
to
0
dBm phone line level.
Send Audio
Input
XLR
female connector. Active balanced. Accommodates
-
24
to +12
dBm levels in
LINE
mode;
-
68
to
-
35
dBm in
MIC
mode. Front panel
screwdriver level adjust.
-;
Caller
Audio
Output
XLR
male connector. Active differential. Output levels to +14 dBm
depending upon der telephone
line
level and adjustment of front
panel level adjust. Will drive
60012.
AdMix
Output
XLR
male connector. Active differential.
In
AUX mode,
this
output
is
an
isolated second output.
In
MIX
mode,
this
is
a combined
send
and
caller output.
INPUT
to
MIX
Output
specifications:
Unity
gain;
44%
THD;
+12 dBm clip point.
6
Telos
ONEplus
ON€
-
INTRODUCTION
INSTALLATION
SECTION 2
8
T~IOS
ONE
PIUS
ONE
-
I
N
S
T
ALLATION
2.1
AUDIO
The drawing on the preceding page shows how the unit may be
incorporated into an on
-
air
studio
environment.
2.1.1
Mix-minus
The Telos One-plus-0ne send inputs should be fed
mix-minus
audio. That
is,
the
mix
of all the sources you want to feed the
phone
minus
the hybrid output itself.
Broadcast
Consoles
Most
modem broadcast consoles make some provision for
mix-
minus. The best allow selective feeds to the telephone system.
This
is
useful since you sometimes want only one mic feeding the
phone, sometimes you want three or four
mics
(during the morning
show, for instance), and sometimes you want to feed cart
machines
when callers need to hear and react to contest effects, etc.
User-Provided
Mix-Minus
For a simple installation, you can just take the patch send or pre
-
amp
output from the mic channel to feed the phone.
This
works
well, but doesn't have much flexibility. One approach which
allows more control
is
to
use
an
outboard mixer
to
combine sources
as
desired. All of the desired sources are paralleled into the on-air
board and the mixer and the mixer's output feeds the hybrid.
Tdos
ONEplus
ON€
-
INSTALLATION
9
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