Lucent Technologies 6.1 manual Allowed Lists

MERLIN LEGENDCommunications System Release 6.1	Issue 1
System Planning 555-661-112	August 1998

4Features

System Features	Page 4-50
Allowed Lists	4

!SecurityAlert:

If you assign a 0 (zero) as the first digit for any entry in an Allowed List, any toll restrictions assigned for calls to numbers that can be placed by local or toll operators are removed.

Use the instructions in this section and the next (“Disallowed Lists”) only if calling restrictions are assigned to any telephones. Otherwise, skip to the section, “Night Service.”

This section contains instructions to designate an Allowed List of telephone numbers that a restricted telephone can dial.

You can design up to eight lists, each with a maximum of 10 numbers. Each number can have up to six digits, for example, an area code followed by an exchange. If a toll-call prefix is required, you can include a leading 1, which the system doesn’t count as one of the six digits. Star codes (such as *67) may also be included in the list to allow users to access special services offered by the Central Office (CO). Once you have designed the lists, decide which restricted telephones have access to the lists. Each restricted telephone can have up to eight lists.

!SecurityAlert:

In some instances, after dialing a star code the CO responds with a second dial tone as a prompt to enter additional digits. If a caller begins dialing additional digits before the second dial tone, system restrictions may be bypassed and a restricted call may be routed. Careful administration of the Second Dial Tone Timer prevents the caller from bypassing call restrictions in this manner. Refer to the Planning Form Instructions that follow for information.

If foreign exchange (FX) or tie trunks are connected to the system, you can enter the exchange in the Allowed List to allow people with restricted telephones to dial numbers to the area code for the FX or tie trunk. As you design each list, consider which numbers need to be called by specific groups of restricted users. In a private network, restricted telephones can dial non-local UDP extensions. The non-local extension ranges do not need to be put on an Allowed List.