
Editing ATM Signaling and ILMI Parameters
9-7
Parameter: VCI
Default: 5
Range: 1 to 65535
Function: Defines the virtual channel identifier (VCI) for the signaling VC. The
signaling VC is a dedicated VPI/VCI pair reserved for signaling
messages.
Instructions: Accept the default, 5, or enter a value from 1 to 65535.
MIB Object ID: 1.3.6.1.4.1.18.3.4.23.1.7.1.14
Parameter: T303
Default: 4
Range: 1 to 24
Function: Defines the Setup Sent timer value (in seconds). This timer begins when
the circuit initiates a call/connection request by sending a SETUP
message over the signaling VC.
The Setup Sent timer stops when the circuit receives either a CONNECT
message (indicating connection), CALL PROCEEDING message
(indicating that the network received the SETUP message), or RELEASE
COMPLETE message (indicating the rejection of the SETUP message)
from the network.
If the circuit does not receive one of these messages within the allotted
time, it transmits the SETUP message a second time. If the circuit still
does not receive a response, it clears the connection.
Instructions: Accept the default, 4, or enter a value from 1 to 24.
MIB Object ID: 1.3.6.1.4.1.18.3.4.23.1.7.1.25
Caution: The signaling VC (0/5) and the ILMI VC (0/16) are reserved. These
VCs remain in an operational state as long as signaling is enabled on the ATM
interface. Because most ATM devices use these VPI/VCI pairs for signaling,
we recommend that you not change these values.
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