Technical information

Large Business Communications Systems
4-22 Issue 7 June 2001
DEFINITY G3V3 and later releases, including DEFINITY ECS Release 5 and
later, offer three options:
 all — All trunks are transferred.
 restricted — Public network trunks are not transferred.
 none — No trunks are transferred.
NOTE:
Starting with DEFINITY ECS Release 5, trunk-to-trunk transfer is
automatically restricted via administration. To this end, the “Restriction
Override” field in the Class of Restriction form is set to none by default.
To disallow this feature, refer to the procedure provided in ‘‘Disallow
Trunk-to-Trunk Transfer’’ on page 4-42.
NOTE:
When conferencing calls, to prevent inadvertent trunk-to-trunk transfers,
always conference together two outgoing calls. When the calling station
disconnects, it forces the trunks to disconnect as well.
NOTE:
When the trunk-to-trunk transfer feature is disabled, the attendant console
can continue to pass dial-tone to an inbound trunk caller by pressing Start 9
Release.
Forced Entry of Account Code
To maximize system security, it is recommended that the Forced Entry of Account
Code feature be enabled and administered on the system.
NOTE:
For DEFINITY G2, Call Detail Recording (CDR) is required with this option.
See ‘‘Call Detail Recording (CDR) / Station Message Detail Recording
(SMDR)’’ on page 4-52 for more information. Depending on the required
length, the account code may replace other data in the CDR report.
An entry of an account number (1 to 15 digits) can be required for the originating
station COR/COS, toll calls, or WCR network calls. If an account number is not
entered when required, the call is denied. Although the account number is not
verified, callers must enter the appropriate number of digits set by the system
administrator. This adds another level of digit entry that a hacker must crack to
gain access to an outside line.