Voice Switch Detection; Video Switch Detection; Tos Switch Detection - Comtech EF Data Vipersat CDM-570 User Manual

Detection of the voice and video traffic occurs in the Remote modem classifier,
which looks at traffic that is passed in both directions (Hub-to-Remote and
Remote-to-Hub). Once the Voice and Video Switch Detection features are
enabled, the Remote modem will send an Automatic Switch Request (ASR) to
the VMS when an SIP and/or H.323 call is detected. The ASR contains the
destination IP address of the RTP packets. If available hardware and bandwidth
exist, the VMS will establish the SCPC carrier automatically.
Note: Application switching (voice and video) must be enabled for each
NOTE

Voice Switch Detection

This menu item appears for Remote modems only.
Voice Switch Detection is one of the Application switching commands that
provides for a dedicated SCPC connection when an SIP and/or H.323 voice call
is made over the satellite network.
Entering O at the command prompt toggles the Voice Switch Detection
command for the CDM-570/570L between Enabled and Disabled. When
enabled, a voice data-stream will be detected, causing the CDM-570/570L to
send a switch request to the VMS to switch from STDMA to SCPC mode.

Video Switch Detection

This menu item appears for Remote modems only.
Video Switch Detection is one of the Application switching commands that
provides for a dedicated SCPC connection when an H.323 video call is made
over the satellite network.
Entering I at the command prompt toggles the Video Switch Detection
command for the CDM-570/570L between Enabled and Disabled. When
enabled, a video data-stream will be detected, causing the CDM-570/570L to
send a switch request to the VMS to switch from STDMA to SCPC mode.

ToS Switch Detection

This menu item appears for Remote modems only.
One of the four automatic switching functions that the Vipersat CDM-570/570L
is able to perform is ToS (Type of Service) Switching. ToS is defined by an
eight bit field within an IP packet header that is used to set up per-hop-based
QoS rules for prioritizing packets. Because the ToS field remains untouched by
C h ap t e r U s i n g t h e C o m m a n d L i n e I n t e r f a c e ( C L I )
3 -
CDM-570/570L in a network that is going to perform application
switching in order for the VMS to dynamically optimize network
circuit parameters to accommodate these applications.
Load switching by the VMS is not affected by this setting.
V i p e r s a t C o n f i g u r a t io n
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