Yealink SIP-T28P - Manual (Page 103)

Basic Call Features
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3. Depending on your selection:
a.) If you select Always Forward:
1) Press or , or the Switch soft key to select Enable from the Always
field.
2) Enter the destination number you want to forward incoming calls to in the
Forward To field.
3) (Optional.) Enter the always forward on code and off code respectively in
the On Code and Off Code field.
b.) If you select Busy Forward:
1) Press or , or the Switch soft key to select Enable from the Busy
field.
2) Enter the destination number you want to forward incoming calls to when
the phone is busy in the Forward To field.
3) (Optional.) Enter the busy forward on code and off code respectively in the
On Code and Off Code field.
c.) If you select No Answer Forward:
1) Press or , or the Switch soft key to select Enable from the No
Answer field.
2) Enter the destination number you want to forward unanswered incoming
calls to in the Forward To field.
3) Press or , or the Switch soft key to select the ring time to wait
before forwarding from the After Ring Time field.
The default ring time is 12 seconds.
4) (Optional.) Enter the no answer forward on code and off code respectively