Media5 Mediatrix 4104, Reference Manual, Page: 296 / 466

Chapter 18 - SIP Protocol Features Interop Parameters
274 Mediatrix 4104

To define the behaviour with the “sendonly” direction attribute:
1. In the sipInteropMIB , set the sipInteropOnHoldAnswerSdpStreamDirection variable to the proper
value.
In both cases, no direction attribute is present in the SDP if the
sipInteropSdpDirectionAttributeEnable variable is set to Disable (see “Direction Attribute” on
page 272 for more details).
Allowing Multiple Active Media in Answer
You can define the behaviour of the Mediatrix 4104 when answering a request offering more than one active
media.

To allow multiple active media in answer:
1. In the sipInteropMIB , set the sipInteropAllowMultipleActiveMediaInAnswer variable to the proper
value.
Local Ring Behaviour on Provisional Response
You can set the Mediatrix 4104 so that it starts or not the local ring upon receiving a “18x Provisional” response
without SDP.
This setting does not affect the behaviour when the “18x Provisional” response contains SDP, which allows to
establish an early media session before the call is answered.
Table 174: “sendonly” Direction Attribute
Parameter Description
inactive The stream is marked as inactive and the connection address
is set to '0.0.0.0'.
revconly If the stream is currently active or receive only, it is marked as
recvonly and the connection address is set to the IP address
of the unit.
If the stream is currently send only or inactive, it is marked as
inactive and the connection address is set to '0.0.0.0'.
This method is in conformance with RFC 3264.
Figure 85: Allow Multiple Active Media in Answer
Parameter Description
disable The answer contains only one active media. The media specified as active
in the answer is the top-most matching one in the offer. Other media are
set to inactive.
enable Each matching active media in the offer is specified as active in the
answer. Other media are set to inactive