AEQ
PHOENIX STRATOS
59
See more details in section 4.3 of this manual.
•
The rest of options to be configured are:
o
FEC mode: this option allows you to configure whether FEC (Forward Error
Correction) is used or not (there is a trade-off for a bigger binary rate). See
section 4.4.
o
Local media port: this option allows you to configure the value of the IP
port selected to transmit audio at origin over IP. Minimum value 1,024.
Maximum value 65,534. Usually recommended value 5004.
o
Adaptive/Fixed and Adaptive buffer max/Fixed buffer length: this option
allows you to configure the type and maximum size of reception buffer. See
section 4.4.
o
Symmetric RTP: this option allows you to force the local unit to send audio
to the same IP and port from which it is receiving audio. The destination
port specified when making the call will be ignored when we receive
packets from the remote equipment. This option will allow you to connect to
an equipment with unknown IP and/or port (because it’s behind a router
with NAT, for instance).
Each unit will send audio to the “Local media port” of the remote equipment automatically,
thanks to the SIP signaling protocol. That signaling also accomplishes coding profile negotiation
and call establishment / release from any of both sides of the communication once the remote
equipment has been identified by its IP address and reached.
4.2.3. RTP Point to Point (RAW).
This type of connection is selected when the connection over IP will be an RTP type link with
calling of the IP address to IP address type. Obviously there is no advanced signaling protocol
in this scenario and you will need to established, set parameters and disconnect communication
from both ends. Audio encoding must be the same (and explicitly specified) in both ends of the
communication.
In order to avoid that hassle, making the calling, hanging up and coding selection tasks easier,
as it will be necessary to do it from one end only, “SmartRTP“ can be activated in both involved
audiocodecs (provided that they are AEQ Phoenix compatible with this mode).
If the operating mode required for a contact is “RTP raw”, the only valid equipment identifier is:
<IP_address>:<destination port>, for example: “
172.26.33.28:5008
”
The specified destination port must match the Local port set up for the remote equipment. That
is, in order to make a RTP call, we must know the IP address and local port of the remote unit
even if “SmartRTP“ is used.
When you create a Call Book, these fields describing a contact can be
modified in the Call Book that can be accessed from a codec individual
control window through the “Contacts” option in “Configuration”(see
section 5.1.7 of “AEQ ControlPHOENIX” user’s manual). In order to
call a same contact using different IP modes (as defined in
“INTERFACE“ drop-down menu), different contact entries have to be
created.
You can access the IP configuration submenu for RTP Raw mode by clicking on “I/F Setup“
button, and that it is explained in section 6.1.4.3 of “AEQ ControlPHOENIX“ user’s manual.
The parameters to be configured are:
•
FEC mode: this option allows you to configure whether FEC (Forward Error
Correction) is used or not (there is a trade-off for a bigger binary rate). See section
3.4.
