TC Communications TC1901 Manual de usuario

Notice!

Although every effort has been made to insure that this manual is current

and accurate as of date of publication, no guarantee is given or implied

that this document is error free or accurate with regard to any specifica-

tion. TC Communications, Inc. reserves the right to change or modify

the contents of this manual at any time without prior notification.

TC Communications, Inc. 17881 Cartwright Road - Irvine, CA 92614

Tel: (949) 852-1972 Fax: (949) 852-1948 Web Site: www.tccomm.com Email: info@tccomm.com

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Features

Description

The TC1901 "Quick Talk" is designed specifically to extend a regular analog phone line from a PBX to remote

location via optic cable. The voice picked up by a handset's mouth piece (connected to the TC1901) is

digitized. Because the TC1901 digitizes the analog signals (PCM), voice quality does not degrade over

extended distances.

The functions of the TC1901 fiber optic extender are for one channel phone or one channel analog signal for

2 or 4 wire, and two channels for data RS-232, RS-422, Dry Contact, and TTL, (future release).

The analog interface is for FSK (frequency shift key) applications. The analog interface has 600 ohm

isolation audio transformer. The analog voltage can be 0 to 3 Vpp.

FXS or FXO, are available on the unit. The front DIP switch is used to set the unit as FXS or FXO, and two

rear panel RJ11 ports are dedicated for FXS and FXO.

The TC1901s can be used to set up a phone hot link, it can be one of the following: 1. To be set as an FXO

to FXS, or 2. To be set as an FXS to FXS.

One of the two units has to be set as a Master with the front DIP switch "MSTR" in the "down" position.

The other unit must be a "Slave" unit with front DIP switch "MSTR" set to the "up" position.

When both units are set as FXS to FXS, the front DIP switch "RING CAD" can be set to ring the other party

with a "candence" instead of a straight ring.

Initiating and answering a call

Refer to the application examples on page 7 for FXO to FXS or FXS to FXS setups.

The LEDs on the front panel show the power status, ringing signal, Master status, FXS/FXO status, voice

volume picked up by local phone's mouth piece and the voice volume received from remote peer. TC1901

has a built-in dry contact relay to provide external alarm. The standard power supply is 12VDC at 400mA

max. Power options include 24VDC, -48VDC, 125VDC or AC to DC power adapter which can be ordered

for a 115VAC to 230VAC power supply (use of factory adapters are recommended).

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POWER A: When lit, a good power source is present at power jack A (rear panel).

POWER B: When lit, a good power source is present at power jack B (rear panel).

VccA: +5V Voltage indicator. This LED should light whenever power is connected to the

unit. It indicates the correct operating voltage is being derived from the power source.

VDC: Not Used.

ALM: Alarm indicator. When lit on Red, there is problem with the incoming optical signal.

OPT: When "On" the optic signal is above sensitivity. It will flash when the optic signal is lost or

below sensitivity.

SYNC : When lit, it indicates valid optic signal is received. When flashing, it indicates an

invalid optic signal is received. This can happen when the optic receiver is overdrived or

the wrong optic signal is received.

RSNC: Remote Sync; When lit, it indicates "SYNC" LED status at the remote unit's front panel.

When Off, either the remote unit didn't receive good optic signal or local unit didn't

receive optic signal.

FXS: When lit, it indicates the RJ-11 port for FXS is activated. Note: Don't use both of the FXO

and FXS connectors on the same unit at the same time.

When flashing, it indicates a problem with the FXS module. For temporary correction of this problem,

swap the settings for the FXO DIP switch#2 on the local and remote units. If the local unit is set as

FXO (DIP switch#2 down) set it as an FXS (with DIP switch#2 up) and set the remote unit as an

FXO unit (with DIP switch#2 down). Bring the remote unit to the local site and take the local unit to

the remote site. Be sure to let the Technical Support Department at TC Communications, Inc know

about the problem at (949) 852-1973.

NOTE: The rest of the LEDs will be for future releases.

HOOK: When lit, it indicates the following:

1) When set to FXS, the local phone is off hook.

2) When set to FXO, the remote unit is off hook.

RING: When lit or flashing, it indicates the following:

1) When set to FXS, a ring signal is received from the remote unit.

2) When set to FXO, a ring signal is received from the phone line.

RMTLB: When lit, it indicates the unit's "RMTLB" switch is on. (future release).

MSTR: When lit, it indicates the unit is set as the "Master" of the link.

FXO: When lit, it indicates the RJ-11 port for FXO is activated.

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Connect to a regular (conventional) 2-wire telephone. This RJ11 is used for "FXS". If a hotlink phone line

is desired, then both TC1901s should connect to this "FXS" connector.

Use regular phone wire to connect the TC1901 to a dial up phone network such as phone line from Telco

or PBX phone line. This RJ11 jack is used for "FXO".

When using the Analog interface, use this "LINE" RJ-11 jack to connect your 2 or 4 wire analog signal.Refer

to the pin assignments on page 8.

Channel 1 used for RS-232, RS-422, Dry Contact, and TTL. (Future release).

Channel 2 used for RS-232, RS-422, Dry Contact, and TTL. (Future release).

The Dry Contact Relay is normally in the “Open” position. The following conditions will activate the dry

contact relay to "close" status:

1. When there is a Major Alarm (Optic signal is lost). This function can be disabled by setting the

front panel SW4 to the "down" position.

The user can use the Dry Contact Relay for an additional function by enabling SW2_3 to the On position

(internal switch#2) on the FXS side unit only. This feature allows the Dry Contact Relay to close and open

as the telephone set rings. The user can use it to connect an additional external device so that the user can

monitor the ringing when they are away from their phone. By using this function, all the LEDs will behave

normal.

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This application is to extend a phone line via fiber optic cable. Follow the connections shown in the following

diagram. Connect two TC1901s via fiber optic and set one of them to FXO and the other to FXS. Connect

a regular dial-up phone line to "LINE" RJ11 of the "FXO" unit and connect a telephone set to "PHONE" RJ11

of the FXS unit. To establish a call, the users at the remote end (FXS side) can pickup the phone and dial

out to outside phone network just like regular telephone line extended. Make sure you set one of the units

as a "Master" and the other as a "Slave".

By connecting two TC1901s together using two regular telephone sets, the users at both sides of the fiber

link can have a hotlink phone line setup. When one user lifts up the handset, the remote side phone will start

to ring. When remote side user picks up the handset, the phone stops to ring and the conversation begins.

When conversation is over any user can replace the handset to hook to terminate the phone link. If either

party places the handset to hook and the other does not hang up, the phone on hook will continue to ring.

NOTE: You may experience some clicking noise, this is normal until the remote side picks up the handset.

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Figure 5 shows how the TC1901 connects to the phone or PBX as in Figure 3 and 4. TC1901's phone Jack

and Line Jack use the middle two pins to connect to telephone or PBX's Tip and Ring.

For analog audio signals:

Pin 5 is the transmit TIP & pin2 is the transmit RING.

Pin 4 is the receive TIP & pin 3 is the receive RING.

Note: When using the Analog interface, both TC1901 units must be set as FXO units by setting the front panel

DIP switch #2 to the down "On" position. Use only the FXO RJ-11 connector's on the rear panel.

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Before unpacking any equipment, inspect all shipping containers for evidence of external damage caused

during transportation. The equipment should also be inspected for damage after it is removed from the

container(s). Claims concerning shipping damage should be made directly to the pertinent shipping agencies.

Any discrepancies should be reported immediately to TC Communications' Customer Service Department.

The TC1901 should be located in an area that provides adequate light, work space, and ventilation. Avoid

locating it next to any equipment that may produce electrical interference or strong magnetic fields, such as

elevator shafts or heavy duty power supplies. As with any electronic equipment, keep the unit from excessive

moisture, heat, vibration, and freezing temperatures.

Each TC1901 unit is powered via a rear panel's terminal block connector. There are two pairs

of terminal block connectors ("PWR A" and "PWR B") for power redundancy, the power

LEDs on the front panel will light according to which power jack(s) is/are connected. The

power is 12VDC @400mA, (24VDC, -48VDC, 125VDC and AC 115VAC to 230VAC are

optional).

The RJ-11 connector uses the middle two pins for Tip and Ring, see page 8 for pin assignments.

DIP switch #1 must be set opposite on the local and remote units, one of the units must be a Master and the

other a Slave. DIP switch #2, set according to your setup for FXS to FXS or FXO to FXS. DIP switch #3,

use to change the ring sound. DIP switch #4, use to disable the alarm. DIP switch #5, use to force "off hook"

condition (for testing only). DIP switches #6, 7, and 8 are for future releases (not used).

When power is first turned on, all the LEDs should be flashing for one second. This allows the user to be

sure all the LEDs are in working condition.

After one minute, the "alarm" LED should be Off, "PWR A" or "PWR B" or both will be On, "VCCA," "OPT,"

" SYNC," and "RSNC" will be On, one of "FXS" or "FXO" LEDs should be on to indicate FXO or FXS setup,

and the "MSTR" LED should be lit on only one of the units. The flashing green LEDs will turn to solid when

abnormal conditions are removed and the red LED (alarm) will be off.

( 1 2 V D C ) @ 4 0 0 m A

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1. Apply the power by plugging the power plug into any power jack on the rear panel. The power source

can be from a power adapter or from a power card (installed either on the left or right side of the rack).

2. The "PWR A" or "PWR B" LED on the front panel of the card will light according to which power jack

(A or B) is connected. Both LEDs will light when power redundancy is utilized.

3. The "Vcc" LED should be lit, indicating an adequate operating voltage is being derived from the power

source.

4. Make sure front panel DIP switches are set correctly according to your application, refer to page 4.

5. Connect the units according to your setup, refer to page 7. If extending a phone line, make sure the RJ-

11 cable is connected correctly on the RJ-11 connectors on the rear panel for FXO/FXS. If using a "hot

link", make sure to connect to "FXS" RJ-11 connectors on both the local and remote units.

6. Communication is setup between TC1901 peers, the "Alarm" LED will be Off, the green "Sync," and

"RSYNC" LEDs should be On to indicate good optic signal is received.

7. Lift up local phone's handset and observe the remote TC1901's "ring" LEDs start to flash.

8. Once the remote phone rings, the remote user can answer the call by picking up the remote handset.

9. When both parties communicate, the front panel "volume" LEDs should indicate the transmit and receive

volume.

10. When one of the parties replace the handset to hook to terminate the communication, both units will turn

into "idle" state.

Note: The TC1901 FXS configured unit(s) will ring the phone channel during initialization, and the

phone set connected on the FXS channel should ring 10 seconds after power up.

Lightning/Surge Warning Note:

If copper cable(s) connected to TC1901 unit(s) are located outside buildings or enclosures (even at

minimal distances), TC1901 units may be damaged by lightning and/or electrical power surges.

Adding protective devices (surge suppressors/lighting protectors) to each copper cable that is exposed

to potential lightning strikes or power surges is highly recommended. Please be aware that adding such

protective devices can't guarantee 100 percent protection for connected electronic equipment. You

should contact a professional lightning/surge protection consultant for specific questions regarding your

application.

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