; PRI Dialplan: The ISDN-level Type Of Number (TON) or numbering plan, used for
; the dialed number. For most installations, leaving this as 'unknown' (the
; default) works in the most cases. In some very unusual circumstances, you
; may need to set this to 'dynamic' or 'redundant'. Note that if you set one
; of the others, you will be unable to dial another class of numbers. For
; example, if you set 'national', you will be unable to dial local or
; international numbers.
; Neither pridialplan nor prilocaldialplan can be changed on reload.
;
; unknown: Unknown
; private: Private ISDN
; local: Local ISDN
; national: National ISDN
; international: International ISDN
; dynamic: Dynamically selects the appropriate dialplan
; redundant: Same as dynamic, except that the underlying number is not
; changed (not common)
;
;pridialplan=unknown
;prilocaldialplan=national
;
; pridialplan may be also set at dialtime, by prefixing the dialled number with
; one of the following letters:
; U - Unknown
; I - International
; N - National
; L - Local (Net Specific)
; S - Subscriber
; V - Abbreviated
; R - Reserved (should probably never be used but is included for completeness)
;
; Additionally, you may also set the following NPI bits (also by prefixing the
; dialled string with one of the following letters):
; u - Unknown
; e - E.163/E.164 (ISDN/telephony)
; x - X.121 (Data)
; f - F.69 (Telex)
; n - National
; p - Private
; r - Reserved (should probably never be used but is included for completeness)
;
http://www.voip-info.org/wiki/view/chan_dahdi.conf
