Siemens 600 Series 사용자 설명서

ROLMphone 300/600 User Guide

• Bridged Call lets you join an existing call on a 

busy multiple line appearance.

• The Callback (CALLBCK) key can help you 

complete calls to extensions that are busy, ringing, 
or in Do Not Disturb mode. It also lets you return 
calls to parties that have left you reminder messages 
and to the PhoneMail system.

• Class of Service Changeover lets you restore your 

phone’s primary class of service if your CBX 
automatically changes it to a secondary class of 
service during non-working hours.

• The Clear key can be used to remove or cancel 

information shown on a phone’s display when it is 
in program mode. It can also be used to drop the last 
party from a conference call and the second party 
from a consultation call.

• Direct Station Select (DSS) lets you call a 

predetermined extension by pressing a key instead 
of dialing the extension. The status light next to the 
DSS key will also turn on whenever the extension 
associated with the DSS key is in use, which allows 
you to monitor the extension.

• Mailbox lets you receive reminder messages and 

PhoneMail and ROLMfax notifications. It also lets 
you answer them by pressing a key and leaving 
reminder messages at other extensions.

• One-Way Broadcast Speaker Call lets you make 

a one-way call to the speakers of up to 40 phones 
that are multiple line appearances of the same 
extension.

• Personal Identification Number (PIN) lets you 

temporarily change the calling privileges of a 
phone.