MX-ONE Number Presentation

To provide correct DID (incoming) and CLOP (outgoing presentation), the MX-ONE uses the command RONDI.

Example number:
PSTN number: 37345xx (i.e., as found in the telephone directory).
PABX directory range: 45xx

Transmitted digits from Telco: 5xx

Typical RONDI:

RONDI:ROU=1,EXNOPU=0-373,PRE=4;

EXNOPU tells the Telco what kind of line is connected (0- indicating Unknown public).
It also will append the 373 before the internal range of 45xx, to send the complete number of 37345xx to the Telco.

Incoming calls are presented as 5xx to the PBX. To adapt to the range of 45xx, it adds the PRE-digit of 4. So the 5xx number is changed to 45xx and will correspond to an internal directory number.

Thus RONDI is used for incoming and outgoing number analysis.