Technical information

Keeping Unauthorized Third Parties from Entering the
System
Issue 7 June 2001
4-9
Night Service
You can control the time of day that Remote Access is available by using the night
service feature. This limits the amount of time Remote Access is available and
thus reduces risks.
For DEFINITY ECS, DEFINITY G1, G3, and System 75, trunks translated for
Remote Access can be given a night service destination. Although it is not
recommended, trunks accessing the system can be assigned a Remote Access
extension as a night service destination. The system will change to either allow or
deny access for a feature. A night service button can be assigned to implement
this capability. When night service is activated for these trunk groups, the Remote
Access feature is available. When night service is deactivated, calls can be routed
to an attendant for handling.
For DEFINITY G2 and System 85, when the Remote Access feature is “shared”
with Listed Directory Number (LDN) service, a Remote Access call is routed to the
attendant under normal (business hours) conditions, and the attendant extends
the call like any other LDN call. When Unattended Console Service is active,
“shared” non-DID LDN service becomes inactive, and Remote Access calls are
handled as direct dialed access calls. In effect, with “shared” non-DID LDN
service, the Remote Access feature is turned off while the attendant is on duty.
This provides a degree of security for Remote Access during normal business
hours by allowing the attendant to screen Remote Access calls before extending
them.
Call Vectoring (DEFINITY ECS and
DEFINITY G3 only)
For DEFINITY ECS and DEFINITY G3, administering access to the Remote
Access feature through the use of Vector Directory Numbers (VDNs) can help
make the feature more secure. Call Vectoring allows incoming and internal calls to
be processed according to a programmed set of vector commands.
To restrict the use of Remote Access at night, a DID/DNIS VDN can be translated
to route to a vector that has a step to route to the Remote Access extension. The
vector can check time of day and day of week to route the call to an
announcement or intercept tone if Remote Access is not allowed at certain times.