Siemens OpenStage 15 User's Guide download pdf (Page 19)

Getting to know your OpenStage phone

Trunk keys (on multi-line phones only)

The programmable keys on multi-line phones function as line keys. Each

key that is assigned the function "line" is handled as a line. This means up

to seven lines can be configured.

A distinction is drawn here between primary, secondary and phantom

lines. Each of these line types can be used on a private or shared basis

Æ page 19.

Primary line

All multi-line telephones have a primary line. This line can be reached in the

usual manner via your public phone number. Incoming calls are signaled on

this line.

Secondary line

The secondary line on your phone is used as a primary line by another sub-

scriber of the line trunk group. Your primary line, which is configured on an-

other telephone in the line trunk group, simultaneously functions as the

secondary line on that telephone.

Phantom line

Phantom lines are not used as primary lines by any telephones in the line

trunk group. Phantom lines are established when the number of lines pro-

vided by a communications system exceeds the number of available

telephones.

Line utilization

• Private line: A line that is used by a single telephone. This line cannot

be used as a secondary line by another telephone.

• Shared line: A line that is configured on multiple telephones. The line

status is displayed for all telephones that share this line. If, for example,

a shared line is being used by a telephone, a status message indicating

that this line is busy is displayed on all other telephones (Æ page 20).

• Direct call line: A line with a direct connection to another telephone.

To avoid conflict between individual multi-line phones, the functions

"Do not disturb" and "Call forwarding" can only be used for the prima-

ry line.

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Siemens OpenStage 15 User's Guide Page 19