ECMA-123

This ECMA Standard defines an in-band parameter exchange (IPE) for use between terminal adaptors, and between terminal adaptors and interworking units, in private pre-ISDN networks which cannot support out-of-band signaling for parameter exchange.

The IPE specified in this Standard enhances the capability of the private pre-ISDN networks in order to support:

• an exchange of rate adaptation protocol information,
• an exchange of terminal adaptor parameter information, and
• an exchange of information related to maintenance operations.