Glossary

For a complete list of abbreviations and glossary, see the description for ACRONYMS, ABBREVIATIONS AND GLOSSARY.

Originating Node (MX-ONE, or PBX)

The exchange where the party that initiates the call is located. If the call is an incoming external call, the originating exchange is where the call enters the CCS network.

Gateway Node

A gateway exchange is an exchange where the incoming and outgoing signaling systems are not the same for example, ISDN to DPNSS, ISDN to SIP, or vice versa.

A node with incoming signaling system defined as Public ISDN and an outgoing signaling system defined as Private ISDN or vice versa is also considered as a gateway node. Ditto for Public and Private SIP.

Transit Node

An exchange which a call just passes through, and where the incoming and outgoing signaling systems are the same and have the same characteristics that is, both sides are programmed as tie line or public.

Terminating Node

The exchange where the called party is located.