N0 - unknown (default if Nn is omitted).

N1 - ISDN numbering plan (Rec. E.164).

N3 - data numbering plan (Rec. X.121).

N4 - telex numbering plan (Rec. F.69).

N8 - national standard numbering plan.

N9 - private numbering plan.

Zn specifies the type of the Subaddress:

Z0 - NSAP (Rec. X.213) with AFI=0x50, IA5 characters (default if Zn is omitted).

Z2 - user specified, IA5 characters.

The called_party_number or an appropriate part of it, will be sent to the addressed entity. The called_party_subaddress will be transferred transparently by the ISDN network to the destination.

Use ATDL to redial the last dialed telephone number (and/or subaddress).

Placing a call for 1TR6

The ATDx[Yn][Nn]destination_address command is used for dialing as follows.

x = I (ISDN data), A (the analog adapter 1), or B (the analog adapter 2).

Yn specifies the type of address:

Y0 - unknown (default if Yn is omitted).

Y1 - international number.

Y2 - national number.

Nn is the identifier of numbering/addressing plan: N0 - unknown (default if Nn is omitted).

90 Advanced ISDN Call Control

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ZyXEL Communications omni series user manual Placing a call for 1TR6