How to set your PBX Configuration

To ensure a smooth Service Activation, please consider following number formats when configuring your PBX,both for incoming and outgoing calls.

For Outgoing Calls:

The default format for Called Party Number and Calling Party Number is e.164 with + prefix. Other types of formats are supported upon request.
For SIP trunks, numbers must be sent enbloc . Enbloc or Overlap dialling: Overlap receiving will be converted to Enbloc For Outgoing Calls (Customer places a call) For outgoing calls, the A and B number can be sent in the following formats.

	A Number (Customer, originator)	B Number (Destination)
National Call	NSN (TON=NAT) 0 NSN (TON=UNK)* CC NSN (TON=INT) 00 CC NSN (TON=UNK)	NSN (TON=NAT) 0 NSN (TON=UNK)* CCNSN (TON=INT) 00CCNSN (TON=UNK) SN (TON=UNK)
International Call		CCNSN (TON=INT) 00CCNSN (TON=UNK)

*In countries where national dialling prefix 0 is used

For incoming calls:

Incoming calls to any of the allocated numbers against the PBX trunk are typically delivered for Called and Calling Party Number in E.164 with + prefix format. Other number formats are supported upon request. For Incoming Calls (Customer receives a call) For incoming calls, the A and B number can be received in the following formats.

	A Number (Originator)	B Number (Customer, destination)
National Call	NSN (TON=UNK) 0NSN (TON=UNK)*	Extension Digits (TON=UNK) NSN (TON=NAT) 0 NSN (TON=UNK)* CCNSN (TON =INT) 00CCNSN (TON=UNK) SN (TON=UNK)
International Call	00CCNSN (TON=UNK) CC NSN (TON=UNK)

*In countries where national dialling prefix 0 is used Defaults are highlighted in BOLD. If the customer does not use the default configuration, the customer should inform Colt before the service activation.