ADTRAN ATLAS 800PLUS user manual Trunk Conditioning Example

Chapter 5. Using the Terminal Menu

Trunk Conditioning

Trunk conditioning is a process which sets known values in the sig- naling bits and the data field for outgoing DS0s which are cross con- nected to a T1 port which is experiencing alarms (see Figure 5-9). The trunk conditioning process consists of a 2.5-second transmission (indicating call termination), followed by a continuous transmission signaling the final condition (Seized or Idle) as chosen by the user.

Trunk conditioning only applies to RBS T1s in the dedicated map.

T1-A

T1-B

PBX

ATLAS 800

Figure 5-9. Trunk Conditioning

Example:

Voice traffic received on T1-A, and T1-B is groomed onto T1-C to the PBX. If T1-A fails, the DS0s which were cross connected to T1-C would receive trunk conditioning.

Trunk conditioning includes Fault Signaling (setting the state of the signaling bits) and Fault Data Code (setting the state of the data bits). Trunk conditioning can be set for each end of each T1 to T1 connec- tion in a dedicated map. This is simplified by using the copy com- mand (pressing C). The state of the signaling bits will be different for connections to the Network versus connections to user equipment (PBX).

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