Yealink SIP-T20 - Manual (Page 79)

Basic Call Features
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4. Press or to select the forwarding type, and then press .
5. Depending on your selection:
a.) If you select Always Forward:
1) Press or to select Enable from the Always field.
2) Enter the destination number you want to forward all 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 selected Busy Forward:
1) Press or to select Enable from the Busy field.
2) Enter the destination number you want to forward all incoming calls to
when the phone is busy in the Forward To field.
3) (Optional.) Enter the busy forward on code and busy off code respectively
in the On Code and Off Code field.
c.) If you select No Answer Forward:
1) Press or to select Enable from the No Answer field.
2) Enter the destination number you want to forward all unanswered incoming
calls to in the Forward To field.
3) Press or 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
in the On Code and Off Code field.
6. Press to accept the change.
1. Always:
◄ Enable ►
1. Busy:
◄ Enable ►
1. No Answer:
◄ Enable ►