Lucent Technologies 6.1 Release 3.1 Enhancements March, Call Restriction Checking for Star Codes

MERLIN LEGENDCommunications System Release 6.1			Issue 1
System Planning 555-661-112			August 1998
Prior Releases: Features and Enhancements
Release 3.1 Enhancements (March, 1996)			Page xxxv
	Release 3.1 Enhancements	0
	(March, 1996)

Release 3.1 includes all Release 3.0 functionality, plus the enhancements listed below.

Call Restriction Checking for Star Codes 0

Beginning with Release 3.1, a system manager can add star (*) codes to Allowed and Disallowed Lists to help prevent toll fraud. Star codes, typically dialed before an outgoing call, enable telephone users to obtain special services provided by the central office (CO). For example, in many areas, a telephone user can dial

￿￿￿before a telephone number to disable central office-supplied caller

identification at the receiving party’s telephone. You must contract with your telephone service provider to have these codes activated.

When users dial star codes, the system’s calling restrictions determine whether the codes are allowed. If they are allowed, the system’s calling restrictions are reset and the remaining digits that the users dial are checked against the calling restrictions.

Trunk-to-Trunk Transfer Set for Each Extension 0

This enhancement to the Transfer feature enables the system manager to allow or disallow trunk-to-trunk transfer on a per-extension basis. In Release 3.1 and later systems, the default setting for all extensions is restricted.

Programmable Second Dial Tone Timer 0

The system manager can assign a second dial tone timer to lines/trunks, in order to help prevent toll fraud (for example, when star codes are used). After receiving certain digits dialed by a user, the CO may provide a second dial tone, prompting the user to enter more digits. If this second dial tone is delayed, and the user dials digits before the CO provides the second dial tone, there is a risk of toll fraud or misrouting the call. The second dial tone timer enables the system manager to make sure that the CO is ready to receive more digits from the caller.

Security Enhancements 0

The sections below outline security measures that are implemented in

Release 3.1 and later systems.

Disallowed List Including Numbers Often	0
Associated with Toll Fraud

A factory-set Disallowed List 7 contains default entries, which are numbers frequently associated with toll fraud. By default, Disallowed List 7 is automatically assigned to both generic and integrated VMI (voice messaging interface) ports used by voice messaging systems. The system manager can manually assign this list to other extensions.