User's Manual
158
Document #: LTRT-65417
MP-11x & MP-124
13.3.4 Configuring RTP Base UDP Port
You can configure the range of UDP ports for RTP, RTCP, and T.38. The UDP port range
can be configured using media realms in the Media Realm table, allowing you to assign
different port ranges (media realms) to different interfaces. However, if you do not use
media realms, you can configure the lower boundary of the UDP port used for RTP, RTCP
(RTP port + 1) and T.38 (RTP port + 2), using the 'RTP Base UDP Port' (BaseUDPport)
parameter. For example, if the BaseUDPPort is set to 6000, then one channel may use the
ports RTP 6000, RTCP 6001, and T.38 6002, while another channel may use RTP 6010,
RTCP 6011, and T.38 6012.
The range of possible UDP ports is 6,000 to 64,000 (default base UDP port is 6000). The
port range is calculated using the BaseUDPport parameter as follows:
BaseUDPPort to
(BaseU <channels -1> * 10)
The default local UDP ports for audio and fax media streams is calculated using the
following formula:
BaseU (Channel ID * 10) + Port Offset
Where the port offsets are as follows:
Audio RTP:
0
Audio RTCP:
1
Fax T.38:
2
For example, the local T.38 UDP port for channel 30 is calculated as follows:
6000 +
(30*10) + 2 = 6302
The maximum (when all channels are required) UDP port range is calculated as follows:
MP-112/MP-114: BaseUDPport to (BaseU 3*10) - for example, if the
BaseUDPPort is set to 6,000, then the UDP port range is 6,000 to 6,030
MP-118: BaseUDPport to (BaseU 7*10) - for example, if the BaseUDPPort is
set to 6,000, then the UDP port range is 6,000 to 6,070
MP-124: BaseUDPport to (BaseU 23*10) - for example, if the BaseUDPPort
is set to 6,000, then the UDP port range is 6,000 to 6,230
Notes:
•
The device allocates the UDP ports randomly to the channels.
•
To configure the device to use the same port for both RTP and T.38
packets, set the T38UseRTPPort parameter to 1.
•
If you are using Media Realms (see Configuring Media Realms), the port
range configured for the Media Realm must be within this range defined
by the BaseUDPPort parameter.
The procedure below describes how to configure the RTP base UDP port using the Web
interface.
To configure the RTP base UDP port:
1.
Open the RTP/RTCP Settings page (
Configuration
tab >
VoIP
menu >
Media
submenu >
RTP/RTCP Settings
). The relevant parameter is listed under the 'General
Settings' group, as shown below:
Figure
13-8: RTP Based UDP Port in RTP/RTCP Settings Page
2.
Set the 'RTP Base UDP Port' parameter to the required value.
3.
Click
Submit
.
4.
Reset the device for the settings to take effect.
Summary of Contents for MediaPack MP-112
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Page 21: ...Part I Getting Started with Initial Connectivity ...
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Page 31: ...Part II Management Tools ...
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Page 91: ...Part III General System Settings ...
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Page 103: ...Part IV General VoIP Configuration ...
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Page 199: ...Part V Gateway Application ...
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Page 287: ...Part VI Stand Alone Survivability Application ...
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Page 319: ...Part VII Maintenance ...
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Page 347: ...Part VIII Status Performance Monitoring and Reporting ...
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Page 377: ...Part IX Diagnostics ...
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Page 403: ...Part X Appendix ...
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