ZyXEL Communications omni series user manual Answering a Call for DSS1

Each type of outgoing call can be assigned with one origination EAZ by using the command AT&ZOx=Origination_EAZ, where x = I for ISDN data calls, A for the analog adapter 1, and B for the analog adapter 2.

The command AT&ZOx=// removes the assignment of the origination EAZ.

The number assigned by AT&ZOx=Origination_EAZ, if any, will be used for the Origination Address W-element while dialing. The default settings of origination EAZ for all types of calls are UNASSIGNED, meaning the SETUP message sent by the TA contains no Origination Address W-element.

The command AT&ZO? can be used to list the current settings of the origination EAZs.

Answering a Call

Incoming call will be identified as either an ISDN data call or a voice call (including the voice-band-data). ISDN data calls will be routed to the digital communications portion of the TA.

Non-data models will assign voice calls or voice-band-data calls to the analog adapter(s).

Answering a Call for DSS1

The Multiple Subscriber Number (MSN) supplementary service provides the possibility for assigning multiple ISDN numbers to a single ISDN BRI line. Calling users can select, via the public network, one or more distinct terminals on a BRI line.

In some areas however, it is very expensive to get additional subscriber numbers. The subaddress, which is transferred transparently by the ISDN network between the call originating entity (e.g. the calling user) and the addressed entity, can be used for the same purpose as the MSN. Since the TA is highly integrated and multi-functional, it can be imagined as a “black box” that contains

Advanced ISDN Call Control 85