Siemens HiPath 1100 Service Manual page 283

The MSN number must be registered in the External Number Registration (Code
191).
External Line DISA (020)
This setting specifies an external line and the timeout for DISA answering.
The system allows only one DISA call. When there is a DISA call in progress, a second call to
a DISA external line or one with a DISA answering mode is treated as a regular call. If a call is
received over an external line configured as a Fax/DID and DISA, the call is answered by the
Fax/DID.
When an external digital line is used for the DISA feature, its MSN number ("MSN
DISA" - Code 019) is always active for answering DISA.
When DISA is activated for incoming external calls on an external analog line, all calls
are answered by DISA.
7.2.5 External Message Waiting Indicator (MWI)
With this feature a group of extensions called an External MWI Group is able to receive signals
generated by the Voice Mail Server that indicate when there is a message waiting in the user's
mailbox.
For standard telephones with a display MWI will only be indicated if a CLIP is con-
figured for the extension using option 3 or 4 ( "Caller ID for analog extension (CLIP)"
on page 7-8).
Activating External Message Waiting Indicator (014)
Activates the MWI feature for a group of extensions.
External MWI Group (015)
Extensions configured in this group are allowed to receive a Message Waiting Indicator from
an external Voice Mail Server where user's messages and greetings are stored.
A31003-K1160-S100-03-7620
Service Manual
Configuring the system specifically for the client
Comments about the System's Programming Codes
7-45