[Asterisk-Users] X100P with Analogue DDI Trunks

[Mike Price]

I have * configured with 2 X100P cards (fxs_ks). The lines from the
telco are 'analogue both way ddi trunks'. This means that every inbound
call contains digits that represent an extension on the PBX. I can make
outbound calls from * with no problem however I cannot receive inbound
calls on these trunks.

Some investigation has shown that when the line is idle there is 50
volts present and zttool shows the X100P state as OK. When a call is
presented the voltage drops to 0 and the X100P state changes to RED. I
believe that at this point the telco is waiting to receive a ringing or
busy tone.

Has anyone managed to get this configuration working? Am I using the
right interface FXO?

Thoughts and ideas please.

Mike