Siemens 70isdn User Manual

kap09.fm5

Profiset 70isdn, GB: A30853-X300-B501-3-7619

20.5.99

CENTREX (Central Office Exchange) refers to virtual ISDN 

PBXs. Although the public ISDN network is used as the 

line network in this case, the usual PBX features are sup-

ported.

CENTREX features can only be accessed if you are a CEN-

TREX group member. If you are not a CENTREX group 

member, the features described here do not apply. 

Profiset 70isdn signals the arrival of CENTREX 

voicemails. In order to use this feature, a programmable 

key must be assigned the function "71=MWI" (➔ page 

42). This programs the key with the directory number of 

the mailbox to which you have access.

When a voicemail is received, the LED assigned to the 

"MWI" feature key flashes.

For incoming calls from other CENTREX users, Profiset 

70isdn displays both the name and directory number of 

the caller. The directory number is displayed first, fol-

lowed by the name.

A maximum of 24 characters can be displayed, additional 

characters are not displayed if the name exceeds this 

length.

The name is also entered into the call list (➔ page 51).

Profiset 70isdn uses different call signals for external calls 

and internal CENTREX calls. The following default call sig-

nals are used:

Press the "MWI" key. The directory number of the 

mailbox is dialed. The voicemails are then played back.

MWI

Tone (1 second)

Pause (4 seconds)

etc.

Tone repeated twice (0.3 seconds each) 

at 0.4-second intervals

Pause (4 seconds)

etc.