8

7

6

5

4

3

2

1

Octet

VPN indicator information element identifier

1

0

0

0

0

0

1

0

1

Length of Transit counter

2

1

Spare

CN indicator

3

CN identifier

3.1*
...
3.12*

CN indicator (octet 3)

Bits

3 2 1

0 0 0

No indication (Note 1)

0 0 1

Network specific (Note 2)

0 1 0

Global (Note 3)

All others values are reserved.

NOTE 1 – When the CN indicator "no indication" is used, the call belongs to the assigned default CN.

NOTE 2 – When the CN indicator "network specific" is used, the CN identifier is contained in the following octets.

NOTE 3 – When the CN indicator "global" is used, the CN identifier in the following octets contains a
globally unique value.

CN identifier (octets 3.1 to 3.12)

The CN identifier indicated "Network specific" is a network provider matter.

When the CN indicator is set to "global", the CN identifier contains the binary representation of the CN identifier. The CN identifier starts with the BCD (Binary Coded Decimal) representation of the E.164 country code digits of the country where the CN was initially assigned. The remainder of the CN identifier is country specific.