1.20 Integrated Services Digital Network (ISDN) Service Features
1.20.1.7 Call Transfer (CT)—by ISDN
Description
An ISDN call can be transferred to an outside party using the ISDN service of the telephone company, instead of the PBX feature, without occupying a second ISDN line.
This feature complies with the following European Telecommunication Standard (ETS) specifications: ETS 300 369 Explicit Call Transfer (ECT) supplementary service.
Conditions
•The availability of this feature is dependent on the contract with the telephone company.
•This feature can be enabled or disabled on an ISDN port basis.
•If an ISDN port is in
•Call Transfer with Announcement and Call Transfer without Announcement is possible. ( 
1.11.1Call Transfer)
•The call charges after completing this feature will not be recorded by the PBX.
User Manual References
User Manual
1.4.1 Transferring a Call (Call Transfer)
