User manual

21/1551-ASP 113 01 Uen N2 2014-01-28 71
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OLUTION ARCHITECTURE
5.4.1 IP Phones
In MX-ONE Telephony System, the IP phones can communicate using
either the SIP or the H.323 protocol. Note that it is not recommended to
use H.323 and SIP phones simultaneously in the same MX-ONE
system. This is because calls between SIP and H.323 terminals will be
forced gateway calls, which will lead to lower capacity as calls between
the two versions will require gateway resources. Any SIP- or
H.323-compatible IP terminal (phone or client) may be connected to
MX-ONE Telephony System. However, for full functionality, the Aastra
IP phones or soft clients must be used.
The SIP extension solution in MX-ONE offers from basic calls according
to standards, including caller ID/name, up to services like hold, transfer
and conference. Additional services like call pickup, intrusion, call back
are also supported, they are initiated either with suffix dialing or with soft-
keys, depending on model.
Using the Aastra 6700i range of SIP telephones, the end-user feature
level on high-end versions is similar to that offered by the Dialog series
using H.323, plus some more functions, like multiple terminal login on
the same number (forking), Extra Directory Numbers, Shared Call
Appearance, Intercom, Do Not Disturb and Call Parking pool.
Basic functions are available according to the H.323 standard, including
Free Seating, allowing any IP telephony user to log on to any IP phone.
To be able to offer voice routing services, like Inquiry and Transfer, the
routines for rerouting of media according to ITU-T H.323 are used. The
IP phones shall be supplied from Aastra to ensure the highest level of
featured functions but can also be of other brands, supporting the open
H.323 or SIP standard, if basic call services are sufficient.
• MX-ONE supports SIP phones from the Aastra 6700i series and the
BluStar portfolio as well as H.323 phones from the Aastra 7400ip
(DBC 44x) and the Dialog 4400 series (DBC 42x). Examples of
features for the MX-ONE IP phones are:
• An automatic installation of configuration information and updated
software from a Web server whenever the phone is restarted.
• A web browser interface enables users to make their own phone
settings, such as edit a phone book, or a function key.
• Corporate phone book and menu functions
For detailed information on the IP phones, see the directions for use for
each phone.
5.4.2 Analog Phones
Analog phones, answering machine systems, or Group 3 Fax with DTMF
signaling capabilities can be connected to MX-ONE Telephony System.