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1.10 Conversation Features
84 Feature Guide
1.10.7 External Feature Access (EFA)
Description
An extension user can access features of a host PBX or the telephone company, such as Call Waiting. An
EFA (External Feature Access) signal is sent to the host PBX or the telephone company. This feature is only
available during outside (CO) line calls, including Host PBX Access (
1.5.2.7 Host PBX Access Code
(Access Code to the Telephone Company from a Host PBX)).
Conditions
• This feature functions only if the FLASH/RECALL button is set to "MODE 1: EFA mode" ( 1.10.6
Flash/Recall). It is also possible to perform this feature by entering the EFA feature number when the
current call is placed on consultation hold ( 1.12.5 Consultation Hold).
• Flash/Recall Time
The length of an EFA signal can be selected for each outside (CO) line ( Flash/Recall Time [418]).
User Manual References
1.8.2 If a Host PBX is Connected