![](http://pdfasset.owneriq.net/4/f3/4f3d41c9-2840-4789-9553-14405b8214d7/4f3d41c9-2840-4789-9553-14405b8214d7-bg63.png)
2.8 Using User-supplied Equipment
Operation
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2.8.2 If a Host PBX is Connected
Accessing external services (External Feature Access)
You can access special features (e.g. Call
Waiting) offered by a host PBX or Central
Office. This feature is only effective with an
outside call.
• If you programme "EFA" (External Feature Access) to the FLASH button by system