CLEAR-COM ECLIPSE TEL-14 TWO-CHANNEL TELEPHONE INTERFACE INSTRUCTION MANUAL
TEL-14 Two-Channel Telephone Interface Instruction Manual © 2007 Vitec Group Communications Ltd. All rights reserved. Part Number 810308Z Rev. 3 Vitec Group Communications, LLC. 850 Marina Village Parkway Alameda, CA 94501 U.S.A Vitec Group Communications 7400 Beach Drive Cambridge Research Park Cambridgeshire United Kingdom CB25 9TP Vitec Group Communications Room 1806, Hua Bin Building No. 8 Yong An Dong Li Jian Guo Men Wai Ave Chao Yang District Beijing, P.R.
CONTENTS OPERATION 1-1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6 INSTALLATION 2-1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ii TEL-14 TWO-CHANNEL TELEPHONE INTERFACE
IMPORTANT SAFETY INSTRUCTIONS 1. 2. 3. 4. 5. 6. 7. Please read and follow these instructions before operating this product. 8. 9. 10. 11. 12. 13. Read these instructions. Keep these instructions. Heed all warnings. Follow all instructions. Do not use this apparatus near water. Clean only with dry cloth. Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.
CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN This symbol alerts you to the presence of uninsulated dangerous voltage within the product's enclosure that might be of sufficient magnitude to constitute a risk of electric shock. Do not open the product's case. This symbol informs you that important operating and maintenance instructions are included in the literature accompanying this product.
1 OPERATION INTRODUCTION This chapter describes how to use the TEL-14 two-channel auto-nulling telephone interface. The TEL-14's panel controls and internal option switches can select any one of a large number of modes of operation. This chapter describes the five most common modes: • Intercom-station telephone access • Self-service dial-in This chapter describes the five most common modes of operation.
Note: When using the TEL-14 with a speaker station, keep the panel mic gain low. In general, keep all gain controls set to a level which is acceptable, but not excessive. DESCRIPTION The TEL-14 telephone interface can be installed in an IMF-3 or IMF-102 interface frame. Install the TEL-14 in an interface frame. See the Interface Frames Instruction Manual for more information.
"Ring/Off-Hook" LED The "ring/off-hook" LED flashes red when the telephone line receives a ring signal. The LED is green while the line is answered and in use. The LED flickers yellow during the automatic hybrid nulling process. The LED is off when the line is on-hook and not ringing. "Hook" Button The "hook" button allows a local operator to manually toggle the TEL-14 line between "on-hook" (telephone line not in use) and "off-hook" (line "seized" -that is, in use) status.
"Auto Gain" Status LEDs These green and yellow LEDs indicate the currently selected “auto gain” mode. The yellow LED indicates that the “adjustable” mode is selected and the green LED indicates that the “fixed” mode is selected. Refer to the previous paragraph for an explanation of these modes. "Auto Answer" Button The front-panel “auto answer” button allows the local user to enable or disable the TEL-14's auto answering mode.
AUTOMATIC TELEPHONE LINE NULL The TEL-14 features sophisticated automatic nulling circuitry, in addition to its integral echo cancellation system. This nulling capability is in two parts: • The initial telephone line hybrid null is to be performed the first time a telephone line is connected to the TEL-14 or whenever a different telephone line is connected. This process is automatic, but must be initiated by the user. The way to do this is described later in this section.
The above initial automatic nulling process should not need to be repeated, unless the telephone line connection is changed to a different telephone number or if there is reason to believe the telephone line impedance has changed significantly--for example, if echoing or feedback occurs at a lower volume setting than before.
If you are calling from an outside line in “self-service dial-in” mode, the audio paths are normally preset and available as soon as the TEL-14 answers your call. The TEL-14 will answer your call after either 1 or 4 rings, depending on how you configure it. If you are calling in on a "direct inward access" line with no preset audio paths, you may need to enter passwords, selector codes, and/or control codes to activate audio paths.
equipped with a keypad must originate the call, either he or she must have a key programmed to activate a DTMF sequence. After the call is made, the distant TEL-14 goes off-hook and the incoming telephone call becomes available to the telephone keys the TEL-14 port is preset to. PARTY LINE DIAL-IN MODE Two TEL-14 lines may be programmed into the same party line. "Auto answer" should be enabled to allow people to call and automatically connect into the party line.
2 INSTALLATION INTRODUCTION This chapter describes the TEL-14 two-channel auto-nulling telephone interface and its installation in the matrix, including setting internal option switches, wiring to external devices, operation of the front panel controls and indicators, and electrical and mechanical specifications.
DESCRIPTION The TEL-14 allows two standard loop start POTS (Plain Old Telephone Service) lines to connect to ports in the Eclipse matrix. The TEL-14 dual telephone interface is installed in an interface frame. The following functions are available for each line: • Front panel indication of "ring" and "off-hook" with a single bi-color LED. • Front panel mounted manual "hook" switch button for manual operation of the interface.
WIRING TEL-14 INTERFACE WIRING FOR AN IMF-3 INTERFACE FRAME The TEL-14 line A circuit is connected to the matrix through the RJ-45 connector on the interface rear-panel assembly that the TEL-14 is connected to. The DB-9M connector immediately adjacent to the RJ-45 is used to connect to the telephone line. Similarly, the second RJ-45 and DB-9M connectors connect the TEL-14 Line B circuit. Clear-Com provides DB-9F to RJ-11 adapters (CC# 770025) that allow the use of common RJ-11 telephone jacks and cords.
It is preferable to use a series-connected telephone set with the TEL-14. This will prevent the impedance of the telephone set from disturbing the telephone line impedance recognized by the TEL-14. It will also allow the TEL-14 to automatically disconnect the telephone when it comes offhook. A standard telephone may be installed in series with the TEL-14 by connecting it to pins 1 and 6 of the RJ-11 jack. Refer to Figure 2-2 for a diagram showing one way to connect the TEL-14 in series with a telephone.
connected to a different telephone line. Once this nulling procedure is performed, the TEL-14 will remember the telephone line characteristics when it is removed from the frame or loses power. It is necessary to null (minimize) the sidetone (the sound of the operator's own voice in his or her headset) when an external telephone line is placed in an intercom environment. Ideally, there should be no portion of the talk signal in the listen signal.
impedance of the line be within these standards. The length of the telephone line between the TEL-14 and the Central Telephone Office should not be excessively long. OPTION SWITCH SETTINGS The TEL-14's panel controls and internal option switches can select any one of a large number of modes of operation for the TEL-14.
Line A Line B S7 S7 On On 4 1 Disconnect Tone Selection 1 4 S6 S6 On 87654321 Edge of the Circuit Board 87654321 On On On On On On 8 Normal Ring Count Sense Dial Tone Sense Busy Tone Sense Reorder Tone Sense Loop Current Interruption Immediate Manual Disconnect Splash Tones Loop Current Interruption Guard Time Off Off Off Off Off Off Off Off S1 On 12345678 1 1 4 Off Off Off Off Off Off Short Off 1 On On On On On On Normal Off 1 On On On On On On On On On 8 S1 Off Edge of the Circ
headsets are used. However, if two TEL-14 lines were connected into the same party line, it would be advantageous to set Receive Suppression Disable to the OFF position. This prevents noise from one or more telephone lines from interfering with intercom communication and improves the stability of the connection. Refer to the “Party Line Dial-In Mode” section of this chapter. To leave the telephone line audio connected when the distant party is not speaking, set option switch S6-1 to ON.
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.
Switch S1-4 Sense Reorder Tone: The TEL-14 can automatically disconnect from the telephone line when it senses reorder (fast busy) tone. If necessary, this capability can be disabled. To enable automatic disconnects resulting from reorder tone, set option switch S1-4 to ON. To disable automatic disconnects resulting from reorder tone, set option switch S1-4 to OFF. The factory default setting is ON, providing an automatic disconnect when the TEL-14 senses reorder tone.
S5-2 should always be operated in concert so that either both are ON or both are OFF. If the TEL-14 is used with a Matrix Plus 3 or Eclipse Matrix System, they should be set to the ON position. If the TEL-14 is used with a Matrix Plus II System, they should be set to the OFF position. The factory default setting is ON. Switch S7-1, S7-2, S7-3 and S7-4 Disconnect tone Selection: These switches set the frequency of the call progress tones that the TEL-14 will sense as an indication of a disconnected call.
• Self-service dial-in • Manual call screening • Intercom-to-intercom • Party line dial-in For operating instructions for these modes, see Chapter 1. For configuration options refer to the Eclipse Configuration System Manual. Intercom Station Telephone Access Mode In “intercom-station telephone access” mode, a call on a TEL-14 line can be answered by any intercom station with a selector key assigned to a TEL-14 port label. Intercom stations can originate a call by using the "dial phone" mode.
The operator can also originate outside calls on the standard telephone, and make them available to destinations within the matrix. To set the TEL-14's controls for manual call screening mode: 1. The "auto disconnect" option switches (S1-2 through S1-5) can be set either ON or OFF. This will determine whether the operator will be required to manually hang up the line after each call by using the "hook" button.
PARTY LINE DIAL-IN MODE Two TEL-14 lines may be programmed into the same party line. The TEL-14s should be set to "auto answer" and "auto disconnect" to allow people to use telephones or cellular phones to connect to and leave the party line at will. The callers may communicate with each other, as well as anyone on the party line. To set the TEL-14's controls for party line dial-in mode: 1. The “auto disconnect” option switches (S1-2 through S1-5) should be at the factory set ON position.
3 MAINTENANCE INTRODUCTION This chapter provides a block diagram and a troubleshooting guide for the TEL-14 two-channel auto-nulling telephone interface. To view the diagram refer to the end of this chapter. TROUBLESHOOTING To help isolate any problems you may encounter, a list of possible symptoms and possible solutions is provided. Note that the most common option switch setting is with all switches in the ON position. This is also the factory default setting. 1. No front panel LEDs are lit.
4. A telephone call to the TEL-14 cannot be answered from a station. The red Ring/Off Hook LED lights when the line is called. • Check that the call can be answered by pressing the Hook button while the call is ringing. The Auto Answer LED should turn from red to green when a ringing call is answered. • Check the Matrix programming to stations which cannot pick up the call. 5. When the Self-Service Dial-In feature of the Matrix intercom is used, additional tones are heard over the incoming call prompts.
10.Excessive echo, background noise, or instability is heard during telephone calls or just at the start of a call. • The TEL-14 will usually adapt within 5 seconds of the start of a call. Before it has adapted, voices may temporarily sound hollow. This effect is normal, but may be minimized by reducing the send and/or receive volume settings. • Press the Auto Gain button to light the yellow Auto Gain Adjustable LED. Decrease the send and/or receive volume controls until acceptable operation is attained.
BLOCK DIAGRAM Audio From Intercom Audio To Intercom Line A DSP Telephone Splash Tone Generator Level & Call Progress Tone Detect Nulling Tone Generator Contacts Send Level Level Detect Telephone Set Hybrid Line A Seize, Hold, Disconnect CO POTS Line A Intercom Splash Tone Generator Line A Front Panel LEDs, Switches, Volume Controls To Line A DSP / Tone Generators & Detectors Ring Detect Line A Microprocessor I/O Line A Option Switches Test Interface Microprocessor Line B Option Switches Opt
4 SPECIFICATIONS AUDIO Frequency Response Send Gain Control Range Send Gain (@ 0 dB setting) Receive Gain Control Range Receive Gain (@ 0 dB setting) Trans-Hybrid Loss 300 Hz - 3500 Hz ± 12 dB -12 dBv on intercom line produces -9 dBm on telephone line ± 12 dB -27 dBm on telephone line produces -12 dBv on intercom line > 40 dB, typical RING DETECT SENSITIVITY The TEL-14 will operate with most international telephone ring signal standards.
OPERATING ENVIRONMENT Temperature Between 0 and 70× C (32-150× F) PACKAGE DIMENSIONS Frame Slot Usage Height Width Depth Weight 1 slot of Matrix Plus Interface Frame 5 1/16" (129 mm) 1 3/8" (35 mm) 9 5/32" (233 mm) 0.78 lbs (0.32 kg) Notice About Specifications While Vitec Group Communications makes every attempt to maintain the accuracy of the information contained in its product manuals, that information is subject to change without notice.
LIMITED WARRANTY Vitec Group Communications (VGC) warrants that at the time of purchase, the equipment supplied complies with any specification in the order confirmation when used under normal conditions, and is free from defects in workmanship and materials during the warranty period.
Telephone for the Americas and Asia: +1 510 337 6600 Email: vitec.support@AVC.de Once the standard warranty period has expired, the User Support Center will continue to provide telephone support if you have purchased an Extended Warranty. For latest contact information please refer to the Service and Support section at www.clearcom.com. WARRANTY REPAIRS AND RETURNS Before returning equipment for repair, contact a User Support Center to obtain a Return Material Authorization (RMA).
Note: VGC does not offer warranty extensions on UHF wireless intercom systems, or on any product with a 1-year or 90-day warranty. LIABILITY THE FOREGOING WARRANTY IS VGC'S SOLE AND EXCLUSIVE WARRANTY. THE IMPLIED WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE AND ANY OTHER REQUIRED IMPLIED WARRANTY SHALL EXPIRE AT THE END OF THE WARRANTY PERIOD.
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