Huawei HG659 Manual page 6

RJ11-RJ11 cable (ADSL cable) connected to DSL port on
HG659
Other end of RJ11-RJ11 connected to ADSL/DSL port on
splitter
BT male cable from splitter connected to BT jackpoint
No other devices or cables connected to jackpoint(s) on
wall(s)
OR
In case of RJ45 jackpoint (standard in newer buildings):