ATM Option System Reference - Comtech EF Data

ATM Option
MULTIPLEX PVC.
When this parameter is set to 0, all new voice connections will be blocked. When it is set
to 10000, no new connections will be blocked. In this case the Voice Traffic Control
function is disabled on voice calls to the remote unit if no other port or PVC serving
that unit has been configured with the Maximum Number of Voice Channels set to a
value less than 10000.
Two voice channels are opened when a voice call is relayed through a unit: one to reach
the originator of the call, and the other to reach the receiver of the call. When the two
channels pass through the same port or PVC, the bandwidth taken is twice that taken by
one channel. The Maximum Number of Voice Channels parameter represents the
bandwidth that can be used by all voice calls. For further information refer to the chapter
Voice Traffic Control in the Advanced Voice Features fascicle of this document
series.
Values: 0 - 10000
Default: 10000 (no blocking)
5.3.36 Maximum Voice Channels If High Priority Data
Console SNMP Text-based Config
Maximum Voice
Channels If High Priority
Data
atmpvcLowMaxChannels [atmpvc#] LowMaxChannels
Maximum number of incoming and outgoing voice channels permitted at one time on this
PVC connection when one or more transparent serial ports (HDLC, HDLCOFR, DDCMP,
T-ASYNC, R-ASYNC, BSC, COP, X25, PASSTHRU or PASSTHRUOFR) are set to high
priority. The Maximum Voice Channels If High Priority Data parameter has the effect of
ensuring sufficient bandwidth for the high priority data traffic, while allowing a
reasonable number of voice calls to be placed at the same time.
NOTE: The priority of transparent data ports is configured with the port Class parameter.
Refer to the appendix SE/PORT Configuration Parameters in the Legacy
Data fascicle of this document series.
• The DSR, DCD, DTR and RTS modem signals (RI and RL in X.21) must be
active on the high priority transparent serial port for call blocking to take place.
The modem signals on the remote unit must also be active.
You can assume that the remote modem signals are active if the transparent serial
port modem signals are up, and its Modem control signal parameter is set to
STATPASS or DYNAPASS.
• If the Maximum Voice Channels If High Priority Data is left at its default value
(10000), no call blocking is performed on this connection.
5-20 Memotec Inc.