The customer should be aware that compliance with the above conditions may not prevent degradation
of service in some situations. Repairs to certified equipment should be coordinated by a representative
designated by the supplier. Any repairs or alterations made by the user to this equipment, or equipment
malfunctions, may give the telecommunications company cause to request the user to disconnect the
equipment.
Users should ensure for their own protection that the electrical ground connections of the power utility, tele-
phone lines, and internal metallic water pipe systems, if present, are connected together. This precaution
may be particularly important in rural areas.
CAUTION:Users should not attempt to make such connections themselves, but should contact the
appropriate electric inspection authority or electrician, as appropriate. The Ringer Equivalence Number
(REN) of this device is z.
NOTICE:The Ringer Equivalence Number (REN) assigned to each terminal device provides an indication
of the maximum number of terminals allowed to be connected to a telephone interface. The termination on
an interface may consist of any combination of devices subject only to the requirement that the sum of the
Ringer Equivalence Numbers of all the devices does not exceed 5. This telephone connects to the tele-
phone network under the connecting arrangement code CA11A.
33) IMPORTANT SAFETY INSTRUCTIONS WHEN USING YOUR TELEPHONE EQUIPMENT, BASIC SAFETYPRECAUTIONS SHOULD ALWAYS
BE FOLLOWED TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK AND INJURY TO PERSONS,
INCLUDING THE FOLLOWING:
1. READ AND UNDERSTAND ALLINSTRUCTIONS.
2. FOLLOW ALLWARNINGS AND INSTRUCTIONS MARKED ON THE PRODUCT.
3. UNPLUG THE PRODUCTFROM THE WALLOUTLET BEFORE CLEANING. DO NOT USE LIQUID
CLEANER OR AEROSOLCLEANERS. USE A DAMP CLOTH FOR CLEANING.
4. DO NOTUSE THIS PRODUCT NEAR WATER, FOR EXAMPLE: NEAR ABATHTUB, WASH BOWL,
KITCHEN SINK OR LAUNDRYTUB, IN A WET BASEMENT, OR NEAR A SWIMMING POOL.
5. DO NOTPLACE THIS PRODUCT ON AN UNSTABLE CART, STAND OR TABLE. THE PRODUCT
MAYFALL, CAUSING SERIOUS DAMAGE TO THE PRODUCT.
6. SLOTS AND OPENINGS IN THE CABINETAND THE BACK OF BOTTOM ARE PROVIDED FOR
VENTILATION. THESE OPENINGS MUSTNOT BE BLOCKED OR COVERED. THE OPENINGS
SHOULD NEVER BE BLOCKED BY PLACING THE PRODUCT ON A BED, SOFA, RUG OR ANY
OTHER SIMILAR SURFACE. THIS PRODUCTSHOULD NEVER BE PLACED NEAR OR OVER A RADI-
ATOR OR HEATREGISTER. THIS PRODUCT SHOULD NOT BE PLACED IN A BUILT-IN INSTALLA-
TION UNLESS PROPER VENTILATION IS PROVIDED.
7. NEVER PUSH OBJECTS OF ANYKIND INTO THIS PRODUCT THROUGH CABINET SLOTS AS
THEYMAY TOUCH DANGEROUS VOLTAGE POINTS OR CAUSE A SHORT CIRCUITTHAT COULD
RESULTIN A FIRE OR ELECTRIC SHOCK. NEVER SPILL LIQUID OF ANY KIND ON THE PRODUCT.
8. TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT DISASSEMBLE THIS PRODUCT. IF SER-
VICE IS NECESSARY, SEND OR TAKE THE TELEPHONE TO AQUALIFIED SERVICE FACILITY.
OPENING OR REMOVING COVERS MAYEXPOSE YOU TO DANGEROUS VOLTAGES OR OTHER
RISKS. INCORRECTREASSEMBLY CAN CAUSE ELECTRIC SHOCK WHEN THE APPLIANCE IS
SUBSEQUENTLYUSED.
9. UNPLUG THIS PRODUCTFROM THE WALLOUTLET AND REFER SERVICING TO QUALIFIED
SERVICE PERSONNELUNDER THE FOLLOWING CONDITIONS:
• IF THE POWER SUPPLYCORD OR PLUG IS DAMAGED OR FRAYED
• ID LIQUID HAS BEEN SPILLED INTO THE PRODUCT
• IF THE PRODUCTHAS BEEN EXPOSED TO RAIN OR WATER
• IF THE PRODUCTDOES NOT OPERATE NORMALLY BY FOLLOWING THE OPERATING
INSTRUCTIONS. ADJUSTONLY THOSE CONTROLS THATARE COVERED BY THE OPERAT
ING INSTRUCTIONS, AS IMPROPER ADJUSTMENTOF OTHER CONTROLS MAY RESULT IN
DAMAGE AND WILLOFTEN REQUIRE EXTENSIVE WORK BYA QUALIFED TECHNICIAN
TO RESTORE THE PRODUCTTO NORMAL OPERATION.
• IF THE PRODUCTHAS BEEN DROPPED OR THE CABINET HAS BEEN DAMAGED.
16 Teledex B250D Users Manual
SAFETY
P/N 600-0480-53