T20(s)

Parameter Name

T20(s)

Description

This parameter specifies the value of T20, that is, the maximum duration from the transmission of the group blocking/unblocking message to the receiving of a response from the MSC.

After sending a group blocking/unblocking message, the BSC starts the timer T20. If the BSC fails to receive a response from the MSC before the first expiry of T20, the BSC resends the group blocking/unblocking message. If no response is received before the second expiry of T20, the system reports the BSC Unable to Block Group Circuits or BSC Unable to Unblock Group Circuits alarm.

GUI Value Range

[1,300]

Default Value

30

Unit

Seconds

Step

-

Modification Rules

None

Configuration Policy

None

Recommended Value

30

Parameter Relationship

None

BSC Feature

None

Parameter Class

Parameters About Equipment

Caution

None


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