# NetworkInterface.T1E1[x].ISDN.NFAS_Member[y].NAI

Identifies the network access identifier ( NAI) for this NFAS member.

#### Syntax

NetworkInterface.T1E1[x].ISDN.NFAS_Member[y].NAI = nai

x = 0-(n-1) (0-based trunk number or range of trunk numbers where n equals the number of trunks on the board.)

y = index of the NFAS group member

#### Access

Read/Write

#### Type

Integer

#### Default

For every member of an NFAS group, this keyword must be set in the board keyword file of the board where the D channel resides.

#### Allowed values

0 - 127

#### Example

NetworkInterface.T1E1[0].ISDN.NFAS_Member[1].NAI = 4

#### Details

ISDN applications use this number to refer to the trunk within an NFAS group. The NAI of each trunk in an NFAS group must be unique.

If an NFAS group is not defined, every D channel controls only one trunk (the trunk where the D channel resides). In this case, the ISDN stack sets the NAI to be equal to the trunk number. If you want the NAI for an interface to be different from the trunk number, define an NFAS group consisting of one member and explicitly set the NAI trunk and board numbers for this member.

When using this keyword, NetworkInterface.T1E1[x].D_Channel must be set to ISDN for the trunk (x) bearing the primary D channel.

For information about NFAS groups, refer to the Dialogic® NaturalAccess™ ISDN Software Installation Manual.

#### See also

NetworkInterface.T1E1[x].ISDN.D_Channel_Backup_Trunk, NetworkInterface.T1E1[x].ISDN.NFAS_Member[y].Board, NetworkInterface.T1E1[x].ISDN.NFAS_Member[y].Trunk, NetworkInterface.T1E1[x].ISDN.NFASGroup