Siemens 600Series - Manual (Page 146)

7-18 ROLMphone 300/600 Series User Guide
Class of Service Changeover
Your phone may be set up at the communications server to use one
class of service (the primary) during normal business hours and then
automatically change over to a more limited one (the secondary)
during non-business hours. This arrangement makes it more difficult
for someone to use your phone to make unauthorized calls.
The Class of Service Changeover feature lets you enter your Class of
Service (COS) access code to restore your phone’s primary class of
service during non-business hours, giving you access to all of the
calling features you normally use. Ask your system administrator for
your COS access code.
When you are done, you can return to your phone’s secondary class of
service. Or, if configured at the communications server to do so, your
phone will return to its secondary class of service after a preset period
of time.
To restore your
phone’s primary
class of service ➩ Get a dial tone.
➩ Dial * # 5 9 1.
You will hear the confirmation tone,
followed by the dial tone.
➩ Dial your COS access code.
You will hear the confirmation tone.
To return your
phone’s
secondary class
of service ➩ Get a dial tone.
➩ Dial * # 5 9 0.
You will hear the confirmation tone.
➩ Dial your COS access code.
You will hear the confirmation tone.