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101-3
Cisco Unified Communications Manager Administration Guide
OL-18611-01
Chapter 101 SIP Profile Configuration
SIP Profile Configuration Settings
Disable Early Media on 180 By default, Cisco Unified Communications Manager will signal the
calling phone to play local ringback if SDP is not received in the 180 or
183 response. If SDP is included in the 180 or 183 response, instead of
playing ringback locally, Cisco Unified Communications Manager will
connect media, and the calling phone will play whatever the called device
is sending (such as ringback or busy signal). If you do not receive
ringback, the device to which you are connecting may be including SDP
in the 180 response, but it is not sending any media before the 200OK
response. In this case, check this check box to play local ringback on the
calling phone and connect the media upon receipt of the 200OK response
Note Even though the phone that is receiving ringback is the calling
phone, you need the configuration on the called device profile
because it determines the behavior.
See the “Use of Early Media” section on page 42-11.
Outgoing T.38 INVITE
Include Audio mline
The parameter allows the system to accept a signal from Microsoft
Exchange that causes it to switch the call from audio to T.38 fax. To use
this feature, you must also configure a SIP trunk with this SIP profile. For
more information, see
Chapter 92, “Trunk Configuration.”
Note The parameter applies to SIP trunks only, not phones that are
running SIP or other endpoints.
Table 101-1 SIP Profile Configuration Settings (continued)
Field Description