H3C Technologies H3C MSR 50 User Manual
Page 731
346
Item Description
Switch to ACTIVE State
Without Receiving or Sending
a Connect-Ack Message
•
Enable for outgoing direction—Configure the ISDN protocol to switch to
the ACTIVE state after receiving a Connect message without having to
send a Connect-Ack message.
•
Enable for incoming direction—Configure the ISDN protocol to switch to
the ACTIVE state to start Connect and voice service communications after
sending a Connect message without having to wait for a Connect-Ack
message.
•
Enable for bidirectional directions—Configure the ISDN protocol to switch
to the ACTIVE state after receiving or sending a Connect message without
having to wait for or send a Connect-Ack message.
•
Disable (default)—Configure the ISDN protocol not to ignore the
Connect-Ack messages, that is, the ISDN protocol must wait for the
Connect-Ack message in response to the Connect message before it can
switch to the ACTIVE state to start data and voice service communications.
By default, in the event that the device is communicating with an ISDN switch:
•
The ISDN protocol must wait for the Connect-Ack message in response to
the Connect message before it can switch to the ACTIVE state to start data
and voice service communications.
•
After the ISDN protocol receives a Connect message, it needs to send a
Connect-Ack message in response.
IMPORTANT:
•
In the event that the device is communicating with an ISDN switch, its
settings must be the same as those on the switch.
•
You are not allowed to configure this list on an ISDN interface if there is still
a call on it. Configuration of this list can take effect only if it is configured
when there is no call on the interface. Alternatively, you can manually
disable the interface, configure this list, and then enable the interface.
However, the operations lead to the disconnection of the calls existing on
the interface.
Carry High Layer
Compatibility Information
•
Enable— Configure ISDN to carry the higher layer compatibility (HLC)
information element in Setup messages when placing voice calls.
•
Disable—Disable ISDN from carrying the HLC information element in the
Setup messages when placing voice calls.
By default, the HLC information element is carried in Setup messages when
ISDN places voice calls.
Carry Low Layer Compatibility
Information
•
Enable—Configure ISDN to carry the lower layer compatibility (LLC)
information element in Setup messages when placing voice calls.
•
Disable—Disable ISDN from carrying the LLC information element in the
Setup messages when placing voice calls.
By default, the LLC information element is carried in Setup messages when
ISDN places voice calls.