BusinessPhone Communication Platform 5.1
Warning Messages ASB 150 02 >

## 0x55
External Line Disturbance

Default definition: |  | ALARM + EXTERN + ACTIVE |
Used by block: |  | TR |
Category: |  | MAINTENANCE |

An external line has been disturbance marked.

- D1: Card position
- D2: Individual number of BTU
- D3: Undefined
- D4: Undefined

#### Recommended action

Check the line to the public exchange (PE). Check feeding and polarity, transmission, dial-tone from PE, etc.

Revision: PH2 © Ericsson Enterprise 2003