OKphone 524 User manual

d
O K p h o n e , L L C M O D E L 5 24 SAB O P E R A T I O N S M A N U A L
Page 1
@ MODEL 524 SMART AUDIO BRIDGE
1. MODE SWITCH toggled from {A} TO {C} will connect the 524 to the 2W 224 REMOTE
INTERFACE OR THE CO (Central Office). The 4Wire circuit doesn’t hear any of the 2wire
audio (DTMF signaling, dial tones, and busy signals.) until step 4.
2. The 524 dials the stored telephone number saved in programing step (D# 15n #). If the line is
busy or if the operator wishes to terminate the call, toggle the MODE switch back to {A}.
3. Once the 2W Remote Phone operator knows that the 524 is trying to connect, HE or SHE
MUST enter the BRIDGE PASSKEY (reference programming step DB1xxxx) within 30
seconds or the 524 will automatically terminate the call. BRIDGE PASSKEY is set as “79”for
the DEMO.
4. Once the 2W Remote Phone has “picked-up”, entered the PASSKEY # “79”, the 524 will
change the front LED to GREEN, deliver a HI/LO confirmation tone to both the 2W circuit and
the 4W circuit, signifying that a [2W-4W BRIDGE] condition is enabled.
5. Terminating the 2W connection is accomplished 6 ways.
A. Toggle the MODE SWITCH back to {A}.
B. 2W REMOTE PHONE is “hung-up”, by replacing the handset ON-HOOK,
or the circuit is interrupted by the Central Office (CO).
C. 2W REMOTE PHONE issues a 2 digit DTMF 2nd ALERT #, Our Example “58”
D. 4W Terminal issues a 2 digit SS4 command, Our Ex. “58”.
E. SERIAL program –“^” will perform warm boot.
F. Removing the power cord from the 524.

d
O K p h o n e , L L C M O D E L 5 24 SAB O P E R A T I O N S M A N U A L
Page 2
@ REMOTE 4W TERMINAL
1. With 524 BRIDGE in an “unmanned”location, the REMOTE 4W Terminal can signal the 524
by issuing a SS4 STATION ID (36) command.
2. The 524 BRIDGE acknowledges the STATION ID by sending back to the 4W circuit two 2
600Hz confirmation tones.
3. The 524 automatically draws line current on the 2W line and dials the stored number (ref.
program step (D# 15n #)).
4. The 524 begins a 30 second timer that will ABORT the 2W connection attempt and return
four confirmation tones if the 2W called party:
A. fails to pickup the 2W REMOTE phone.
B. picks up the 2W REMOTE phone, but fails to enter the required PASSKEY to
shutdown the ABORT timer and enable the 2w<>4w audio paths. This
PASSKEY is determined by two programming steps, [D0x where x = number of
digits in the STATION ID command string (either 2,3,4), and DB1xxxx where
xxxx is an unused ID on the 4W circuit. For our example 4W circuit, the number
of digits in the STATION ID = 2, and the PASSKEY is set to (79).
5. Once the Passkey is entered, the 524 will issue a single (HI / LO) confirmation tone and
ENABLE the [2W-4W BRIDGE], illuminating the LED to a GREEN color.
6. To terminate the [2W-4W BRIDGE], please reference Page 1, Section 5.
2W REMOTE PHONE
1-207-555-1212
524 –Bridge
STATION ID = 36
PASSKEY = 79
DISABLE BRIDGE=58
2W EXT 1-207-333-4545
4W –Terminal
STATION ID = 45
524 DIALS
2W-PHONE
EXTENSION
4W signals
524 via STATION ID

d
O K p h o n e , L L C M O D E L 5 24 SAB O P E R A T I O N S M A N U A L
Page 3
@ REMOTE 2W PHONE
1. Even if the 524 BRIDGE is in an “unmanned”location, the REMOTE 2W PHONE can DIAL the
524 by calling the 2W exchange number assigned to the 524 (our example 1-207-333-4545).
2. The MODE SWITCH should be left in the {A} position.
3. The 524 BRIDGE will answer the incoming RINGing after the assigned number of rings
(reference programming step DC5x, where x=number of rings), issue two 600Hz confirmation
tones, commence the 30 second timer, waiting to decode the xxxx digit PASSKEY sent by the
REMOTE 2W phone (via DTMF).
4. The PASSKEY command string is entered by the 2W REMOTE PHONE, Our example “79”.
5. As in PAGE 2 Section 4, the 524 will ABORT the 2W connection attempt and return four
confirmation tones if the 30 second timer elapses without a valid PASSKEY.
6. Once the Passkey is entered, the 524 will issue a single (HI / LO) confirmation tone and
ENABLE the [2W-4W BRIDGE], illuminating the front LED to a GREEN color.
7. To terminate the [2W-4W BRIDGE], please reference Page 1, Section 5.
8. It is recommended that the 2W REMOTE PHONE be outfitted with a PTT type handset to
prevent ambient noise from being transmitted to the 4W circuit.
2W REMOTE PHONE
1-207-555-1212
524 –BRIDGE
4W STATION ID = 36
2nd ALERT = 58
2W EXT 1-207-333-4545
PASSKEY = 79
4W –Terminal
STATION ID = 45
2W-4W BRIDGE
AUTOMATCALLY ENABLED
AFTER PASSKEY IS ENTERED
DIAL 524 2W EXTENSION
ENTER PASSKEY (79)
AFTER CONFIRMATION TONES

d
O K p h o n e , L L C M O D E L 5 24 SAB O P E R A T I O N S M A N U A L
Page 4
524 USB CONNECTION with a PC
1. First step is to determine which COM port the 524 will be communicating over.
Power down the 524 and do not connect the USB cable yet. Start the PC serial application
program TERA TERM. Choose SETUP on the MENU bar, Choose the PORT drop down
box to see which ports are available BEFORE connecting the USB cable. Write down the
current ports. Press the CANCEL button and EXIT the TERA TERM program.
2. With the 524 still powered down, plug in the USB cable from the PC to the 524 and allow
Windows to initialize the USB buss.
3. Re-Start the serial application program TERA TERM, choosing SETUP as in STEP 1. and click
PORT to choose the new COMx port (this port wasn’t included in step one) that will be used for
communication between the 524 and the CPU.
4. Plug in the 524 and allow it to initialize, RED/GREEN leds will flash, with solid RED indicating
the initialization is over.
5. Press the ESC key on the keyboard of the CPU and the message (…RESET) should be
displayed.
6. The 3 DIGIT PASSKEY needs to be entered before any programming can commence.
7. Contact OKphone for initial PASSKEY, this is in the format (#xxx). In other words press
the # key and follow with 3 digits. The programming Parameter sheet delivered with the
DEMO equipment contains the default passkey.
8. Press “DD” to Display Data.
9. Reference SAT/SAB Programming Parameters v1.60 for setup of Model 524.

d
O K p h o n e , L L C M O D E L 5 24 SAB O P E R A T I O N S M A N U A L
Page 5
524 MISCELLANEOUS
1. The Model 524 has 4 ports for 4wire connection, and 2 ports for 2wire connection.
The DEMO unit has only 2 ports activated, Ports 1 & 2, Port 3&4 are disabled.
Port 1 is designated as the Circuit port, and ports 2-4 are designated for Terminal use.
PORT 1 <> PORT2 is connected at all times, except for a brief duration, when the 524 is
attempting to connect to the 2Wire Remote Phone. All 4wire ports are disabled until the
PASSKEY has been entered to establish the BRIDGED condition. If the PASSKEY is not
entered before the 30 second timeout occurs, then the BRIDGE attempt is aborted and the
4wire ports are renabled.
2. The Model 524 only recognizes DTMF signals for dialing. Pulse dialing hasn’t been configured.
3. Terminals can be powered off the LINE cord connection, if a separate 12-24vdc power supply
is connected to the green connector on the back panel of the 524. The DEMO has not
enabled this feature.
4. The PORT1 RX/TX adjustment pots are enabled on the back panel of the 524.
Port 1 RX is expecting a -8dBm signal, so by adjusting the {left pot} RX potentiometer, one can
effect a boost/cut condition for PORT2 TX and the 2W remote terminal. Present factory
settings gives -8dBm at TX out for PORT2 as well as -8dBm out for 2WIRE REMOTE PHONE.
Port 1 TX is also set for -8dBm, so adjusting {right pot} this potentiometer will boost/cut the
audio signal from the 2WIRE REMOTE PHONE and PORT2 RX on the 524.
5. Once the [2W-4W BRIDGE] has been established, the 2WIRE REMOTE PHONE can contact
terminals connected in the 4wire network. The DTMF “touch tones”get converted to SS4
signaling tones (2.4/2.6KHz) by the 524 and broadcasted to the 4w circuit on PORTS 1,2,3,4.
Remember that the number “1”is a reset. Always good to proceed any contact with a “1”which
enhances that the phones on the 4wire circuit have been initialized properly before accepting
the station command to follow. A successful station transmission and reception is followed in
the handset receiver by hearing two confirmation tones {Okphone brand terminals}.
224 2WIRE REMOTE INTERFACE
1. The MODEL 224 2WIRE REMOTE Interface senses line current being seized by the 524 and
doesn’t require any DTMF dialing from the 524 before ringing the 2wire remote phone.
2. The MODEL 224 2WIRE REMOTE Interface should NOT be connected to the CO. It is meant to
be used as an interface between the 524 and a 2wire phone or CONSOLE, since it provides
DC battery bias, dial tone, and ringing.
3. Practical max length of connections should be 1000 FT.