Cisco Systems EGW 2200 Manual De Usuario

The QSIG/DPNSS integration sends the following information with forwarded calls:

The extension of the called party

The extension of the calling party (for internal calls) or the phone number of the calling party (if it 
is an external call and the system uses caller ID)

The reason for the forward (the extension is busy, does not answer, or is set to forward all calls)

Cisco Unity Connection uses this information to answer the call appropriately. For example, a call 
forwarded to Cisco Unity Connection is answered with the personal greeting of the user. If the phone 
system routes the call to Cisco Unity Connection without this information, Cisco Unity Connection 
answers with the opening greeting.

The QSIG/DPNSS integration with Cisco Unity Connection provides the following features.

VoIP

gateway

LAN

132956

Cisco EGW 2200

QSIG/DPNSS
phone system

QSIG or DPNSS signaling backhaul path

SIP signaling path

RTP (voice) path

QSIG or DPNSS

connection

Cisco Unity

Connection server

When an incoming call is routed to an unanswered extension, the 
call is forwarded to the voice mail of the user. The caller then hears 
the personal greeting of the user and can leave a message.

When an incoming call is routed to a busy extension, the call is 
forwarded to the voice mail of the user. The caller then hears the 
busy greeting (if the user enabled it) and can leave a message.

Cisco Unity Connection receives caller ID information from the 
phone system (if available). This information appears in the subject 
line of the message in the desktop messaging application.

A user can retrieve messages without entering an ID. Cisco Unity 
Connection identifies a user based on the extension from which the 
call originated. A password may be required.