NEC NDA-24311 Answering Machine User Manual


 
NEAX2400 IPX ISDN Features and Specifications
NDA-24311, Issue 1
Page 51
Data Transparency - PRI D-120
D-120 Data Transparency - PRI
General Description
This feature provides a completely transparent switched data path between two connected data terminals via PRI.
Operating Procedure
Establish a data call using the procedures described in the ASYNCHRONOUS DATA SWITCHING [A-24] and
SYNCHRONOUS DATA SWITCHING [S-29] feature descriptions.
When the data connection has been established, information transfer between the two connected DTEs is completely
transparent at speeds up to 9.6 kbps asynchronous and 56 kbps synchronous. The NEAX2400 IPX does not alter the
data in any manner.
Service Conditions
1. During data call origination and termination involving a Data Adapter or Data Module, certain character
string sequences are exchanged as part of the call setup process.
2. After the data connection is established, the Data Module awaits entry of the ESC character followed
immediately by -DM as a disconnect request from the DTE.
3. Data transparency does not imply speed and code conversion. If dissimilar devices cannot communicate
when connected directly to each other, they will not be able to communicate via the NEAX2400 IPX.