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Frequently Asked Questions about T-Lock Products

How does the T-Lock knows which calls to block?
In the US, the T-Lock is preset to block all calls that begin with a 1 or a 0 since these cover all toll calls.

How does the T-Lock know which calls to allow?
The T-Lock is preset to allow local 7 or 10 digit calls and any call(s) that you have programmed into the allowed memory of the unit.

Can I block local calls and 411 calls?
If you wish to block 3, 7 or 10 digit calls such as 411 calls, you need to change the digit restriction to 2 (less than 3). Keep in mind that when you change the digit restriction to a number less than the number of digits needed to dial local calls, you will be blocking all local calls as well. If you wish to allow certain local calls, refer to the allow memory instructions in the instructions manual

In my area there are 7 or 10 digit calls that are considered long distance calls. How can I block those and allow the once that are local?
The T-Lock allows you to block this long distance charges. First you need to find out what are the local prefixes (a prefix is the first 3 digits of your 7-digit phone number). Second you need to program to T-Lock using the instructions to add specific numbers into the allow memory in the manual. Following this procedure, you can add up to 240 digits (~32 7-digit numbers, ~23 10-digit numbers, or any combination of prefixes, area codes, etc).

If 240 digits is not enough for the local prefixes (for example the metropolitan area in San Juan, PR), then you can be a little creative and save digits by reducing the amount of digits entered. For example if all the 2x are local prefixes (meaning all calls starting with 20, 21, 22, 23, 24, 25, 26, 27, 28 & 29), then you only need to enter 2 in the memory.

If you need further help programming your T-Lock, please contact us and describe your programming needs. We will usually get back to you with recommended steps within 24 hours.

How difficult is it to install?
The T-Lock is relatively easy to install and it comes with Do-it-yourself instructions. However, we strongly recommend you find or hire someone who has a basic technical understanding of the telephone wiring to perform this installation.

How do I program the T-Lock?
The T-Lock is programmed through your existing telephone's keypad or dial using simple commands (T-Lock instructions). It's so easy anyone can do it. The T-Lock will retain your program even if it is disconnected from the line.

What if it breaks?
The T-Lock has no moving parts and is completely solid state. It has a full one (1) year warranty and should last for years. Best of all the unit is completely undetectable so it's not likely to be bypassed or vandalized.

We now have more than one area code that is a local phone call. Can the T-Lock be programmed to handle this?
It is easy to handle local calls with an area code by just programming the area code into the "allowed number" list. Calls that start with the area code but which are not preceded by a 1 or a 0 will be allowed. The T-Lock will still block calls to the area code if they are preceded with a 1 or 0.

While programming my T-Lock I get these Telco recording?
This is a very common issue and it will not prevent your T-Lock from getting programmed correctly. if you want to avoid these annoying messeges, simply dial another line that you can pick up. While that line is off-hock, you can program your T-Lock with no noises.

When I dial out all I get is dial tone or buzzing noise
Make sure the dialer is not installed backwards.

Can I program the T-Lock with Allowed Memory to restrict dialing of an area code and allow all others?

Our T-Lock has an "allowed" memory which means that you can program it to allow dialing of certain leading digits. By default, the T-Lock is preset at the factory to restrict all 0+ and 1+ calls.

Below is an example of how to program the allow memory to restrict dialing of specific prefix 305 while allowing all other area codes.

IMPORTANT: Please keep in mind that the owner can bypass the restrictions anytime by typing 10XXXX where XXXX is a 4-digit security code.

10-XXXX (pass code to enter programming mode)
1034# (to program the allowed memory)
11#
12#
1301#
1302#
1303#
1304#
Important: Do not include 1305
1306#
1307#
1308#
1309#
131#
132#
133#
134#
135#
136#
137#
138#
139#
14#
15#
16#
17#
18#
19#
Hand-up
The above programming will restrict all calls to all numbers within area code 1-305-XXX-XXXX while allowing unrestricted dialing to all other area codes.

Can I program the T-Lock with Allowed Memory to restrict dialing of a local telephone number or prefix?

Our T-Lock has an "allowed" memory which means that you can program it to allow dialing of certain numbers, while restricting all others.

Since the T-Lock only has an "allowed" memory, if you are on a 7-digit local area, below are the steps to restrict dialing to a 7-digit number, however, if you are on a 10-digit local area, due to memory space restrictions, you can only restrict dialing of a specific prefix, as shown below.

Also, please keep in mind that the owner can bypass the restrictions anytime by typing 10XXXX where XXXX is a 4-digit security code.

Below is an example of how to program the allow memory to restrict dialing of specific preffix 305-512-XXXX. The programing below assumes you are on a 10-digit local dialing zone.

10-XXXX (pass code to enter programming mode)
1034# (to program the allowed memory)
305-1#
305-2#
305-3#
305-4#
Important: Make sure not to include 305-5!
305-6#
305-7#
305-8#
305-9#
Hand-up

The above programming will restrict all calls to 305-5XX-XXXX. If this is too restricting, you can add the following to restrict calls to 305-51X-XXXX.

10-XXXX (pass code to enter programming mode)
1034# (to program the allowed memory)
305-50#
Important: Make sure you not to include 305-51!
305-52#
305-53#
305-54#
305-55#
305-56#
305-57#
305-58#
305-59#
Hand-up

Once again, if this is too restricting, you can add the following to restrict calls to 305-512-XXX:
10-XXXX (pass code to enter programming mode)
1034# (to program the allowed memory)
305-510#
305-511#
305-513#
305-514#
305-515#
305-516#
305-517#
305-518#
305-519#
Hand-up

Beyond restricting prefix on a 10-digit dialing area, we recommend that you use the owner's bypass code to dial restricted telephone numbers. Now, if you are on a 7-digit local dialing zone, You can use the instructions above to restrict dialing of up to 6 digits on a 7-digit number. You may also go the extra steps to restrict all 7 digits as follows:

Lets say the number you are trying to restrict is 305-5124.

305-5120#
305-5121#
305-5123#
Important: Remember not to include 305-5124.
305-5125#
305-5127#
305-5128#
305-5129#
Hand-up.

At this point you have already used 234 out of the 254 digits capacity in the allowed memory of the T-Lock!

How do I reset the T-Lock back to factory defaults.

For T-Lock with Allowed Memory & Call Timer, and Built-in Operators Service, please refer to manual.

If you own a T-Lock with Allowed and Disallowed Memory, and you cannot remember it or the memory has been corrupted and cannot enter programming mode refer to Hardware reset. If you know the program password (default is 54321*) lift the telephone receiver off hook and dial the program password and wait for a beep. Then you will dial 99 wait for beep and then dial 1 wait for beep. The unit is now restored back to factory defaults. Hang up the phone to complete the procedure.

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