Polycom IP 550 User Guide 
 
 
Zayo Managed Services  IP 550 User Guide    Page 11 of 13 
Using the Feature 
Activate: Using the Phone’s Keys 
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1.  Press the DO NOT DISTURB button. 
2.  Using the DISPLAY CONTROL keys, select the individual LINE that you want to place in Do Not 
Disturb mode and then press the SELECT soft key, or press the SET ALL soft key to select all lines. 
3.  Press the ENABLE soft key. 
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If the phone number is shared on another phone, enabling Do Not Disturb on the phone will simply turn on silent ring and 
does not make it busy.  Calls may still be answered on any phone sharing the phone number. 
Depending on how the phone was provisioned, pressing the Do Not Disturb button will either automatically place all line 
appearances into Do Not Disturb, or you may be prompted for which lines to place on Do Not Disturb.
 
 
Deactivate: Using the Phone’s Keys 
1.  Press the DO NOT DISTURB button. 
2.  Using the DISPLAY CONTROL keys, select the LINE to remove from Do Not Disturb mode and 
press the SELECT soft key, or press the CLEAR ALL soft key to remove from all lines. 
3.  Press the DISABLE soft key. 
Activate: Using the Feature Code 
1.  GO OFF HOOK 
2.  Press *78 
Deactivate: Using the Feature Code 
1.  GO OFF HOOK 
2.  Press *79 
Hold 
Allows user to place a call on hold and retrieve it.   
Using the Feature 
Activate: Using the Soft Keys 
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1.  Press the HOLD soft key. 
Deactivate: Using the Soft Keys 
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1.  Press the RESUME soft key. 
 
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If the phone number is shared on another phone, you can put a call on-hold and take the call off-hold at the other phone that is 
sharing the phone number.  
Extended Functionality 
The user can use the HOLD button on the phone to toggle a call on and off hold.