Is there a way to get multiple appearances of a single extension on multiple buttons on a single phone?
So on phone X, buttons 1, 2 and 3 will all have an appearance of extension 100.
Yes you can, however I do not believe it is supported in the GUI.
Take the following excerpt from the ephone CLI configuration:
LINE button-index:dn-index pairs example 1:2 2:5
Configuration line:button with separator feature options:
: normal phone lines
example button 1:2 2:5
s silent ring, ringer muted, call waiting beep muted
example button 1s2 2s5
b silent ring, ringer muted, call waiting beep not muted
example button 1b2 2b5
f feature ring
example button 1f2 2f5
see also 'no dnd feature-ring'
m monitor line, silent ring, call waiting display suppressed
example button 1m2 2m5
see also 'transfer-system full-consult dss'
w watch line (BLF), watch the phone offhook status via the phone's primary ephone-dn
example button 1w2 2w5
o overlay lines, combine multiple lines per physical button
example button 1o2,3,4,5
c overlay call-waiting, combine multiple lines per physical button
example button 1c2,3,4,5
see also 'huntstop channel' for ephone-dn dual-line
x expansion/overflow, define additional expansion lines that are
used when the primary line for an overlay button is
occupied by an active call
Expansion works with 'button o' and not with 'button c'
example button 4o21,22,23,24,25
Different separator options may be use for each button
example button 1:2 2s5 3b7 4f9 5m22 6w10
Message was edited by: jean_sebastien.black - oops, noticed that Rob & Paolo offered a much better explanation of the expansion feature.