Parameter: LNP Options: Outgoing Calls LNP Mode

No LNP insertion

• No LNP field is inserted in the outgoing leg. (Default).

Relay LNP information

• LNP fields are inserted in the outgoing leg only when they are received in the incoming leg.

Always insert LNP information

• LNP fields are inserted in the outgoing leg regardless of their presence in the incoming leg.

The following table contains the pseudo-code of the mapping to the outgoing call according to the configuration AND what was present in the routing script variables:
CPN = called party number or the TO sip header
called = called number variable accessible in routing script
GAP = generic address number SS7 information element type 0xc0
ported_number = extra number type accessible in the routing script
RN = rn field in SIP request URI
bitM = SS7 Forward call indicator information element: ported number translation indicator (bit M)
X = drop number

Outgoing NAP config.	Outgoing SS7	Outgoing SIP
No insertion	bitM = 0 if ported_number then ported_number => CPN called => X else called => CPN	RN and ndpi not present if ported_number then ported_number => CPN called => X else called => CPN
Always	bitM = 1 ported_number => GAP called => CPN	ndpi=yes if ported_number then called => RN ported_number => CPN else called => CPN RN not present
Relay	called=>CPN if ported_number then bitM = 1 if ported_number is empty then ported_number => X else ported_number => GAP else bitM = 0	if ported_number then ndpi=yes if ported_number is empty then called => CPN RN not present else called => RN ported_number => CPN else called => CPN