Specifies a list of logical channel numbers (LCNs) reserved for outgoing
 calls. The list can consist of one or more LCNs. Separate LCNs with
 hyphens to indicate ranges, or with commas to indicate separate list
 items. Specify a value in the range 0 to 4095 for each LCN.

 If a DTE is to make outgoing calls you must specify this parameter
 when defining the DTE.