CHAPTER 4. OfficeServ 7400 Functions
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4.3 UMS Functions
The OfficeServ 7400 provides the Unified Messaging System (UMS) which includes the
auto answering, voice message, and integrated e-mail message management functions.
VoIP UMS processes the call signal using the VoIP module, which has the SIP protocol for
the interface to the voice switch, and transmits the media through the RTP protocol of the
TCP/IP. Accordingly, OfficeServ 7400 has superior architecture for capacity expansion and
is cost effective, since there is no need for the physical interface required for the existing
UMS or VMS.
4.3.1 Auto Attendant
Announcement Replay and Auto Call Forward
y
This system replays the announcement when a calling party is connected to the auto at-
tendant. This announcement can be specified based on holidays, working hours, or non-
working hour.
y
The auto call forward connects a calling party to the desired subscriber’s station when
the calling party dials a station number in the auto attendant. In this case, the call routing
function will be also provided: this detects whether the entered phone number is valid,
or that the length of the phone number can be changed.
Announcement Auto Change Based on the Schedule
Allows the administrator to automatically change and replay the announcement based on
holidays, working hours, and non-working hours.
Announcement Change by Telephone
Allows the administrator to change the announcement by interfacing to the auto attendant
from a remote site.
Call Forwarding to the Mailbox on the Busy Line
When a calling party interfaces to the auto attendant and tries to connect the call to a busy
station, the called party on the busy station can use this function to forward the call to the
voice mailbox.
Queuing Process on the Busy Line
When a calling party interfaces to the auto attendant and tries to connect a call to a busy
station, and the ‘Call Forwarding to the Mailbox on the Busy Line’ function is not set (see
above), a ‘please hold’ message is played and the connection is retried for a specified time.
If the line continues busy after the maximum retry time, another voice message is provided
asking the caller to either forward the call to the voice mailbox or hang up.
