Connecting to Isdn BRI and PRI | Eicon Networks DIVA T/A ISDN Modem

What is ISDN?

Connecting to ISDN - BRI and PRI

There are two types of access interfaces to the ISDN: Basic Rate Access (also referred to as Basic Rate Interface (BRI)) and Primary Rate Access (also referred to as Primary Rate Interface (PRI)).

Basic Rate Access

Basic Rate Interface or Access consists of two B-channels operating at 64 Kbps and one D-channel operating at 16 Kbps. It is also commonly referred to as 2B+D.

Primary Rate Access

The primary rate interface is designed for users with large capacity requirements.

There is no single transmission rate defined for primary rate access. In North America and Japan, for example, primary rate interface is based upon the T1 rate (defined in detail shortly) of 1.544 Mbps. In Europe, by comparison, the rate is 2.048 Mbps.

DIVA T/A ISDN Modem Reference Guide ◆ Page 8

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Eicon Networks DIVA T/A ISDN Modem manual Connecting to Isdn BRI and PRI, Basic Rate Access

Contents

Diva T/A Isdn Modem Reference Guide Eight Edition July 206-193-08 Contents What is ISDN? Diva T/A Isdn Modem Reference Guide What is ISDN? Isdn Communication Channels Channel Channel Connecting to Isdn BRI and PRI Basic Rate Access What is Multilink PPP? What is BACP/BOD? What is DBA? What is Always On / Dynamic Isdn AO/DI? What is Data Compression? Locating AT Commands Locating AT Commands AT Command Groups Alphabetical List of Supported AT Commands AT! Commands Alphabetical List of Supported AT Commands Alphabetical List of Supported AT Commands AT% Commands AT& Commands AT* Commands AT Commands AT@ Commands Other AT Commands Registers AT$ Utility Commands Mini-monitor Commands General AT Commands General AT Commands Values for n Isdn Configuration CommandsDefaults Isdn Configuration Commands None default Default1INS-Net64, NI-1, or 5ESS, µ law will be used default AT!D3=n Default null string this is an optional value AT!N2=nNumber. Numbers are separated by a semicolon AT!N3=n On region 255 do not attempt 56k data call retry For more details, refer to the Rvscom documentationAT!X56=n COM Port Configuration Commands COM Port Configuration Commands Ring For example, Connect Upon connection, the Diva T/A reports the DCE speed Call Control Commands Call Control Commands ATA ATH Configuration Commands Configuration Commands Use the default settings AT!V0=n Profile Commands Multilink PPP Commands Multilink PPP Commands Internet Protocol IP Endpoint Discriminator Class/AddressAT%M3=b3c665ac11 Always On / Dynamic Isdn AT Commands Always On / Dynamic Isdn AT Commands AT!X13=n when Bacp is disabled, see Will be opened after the delay specified by AT!X10Default 1000 bytes AT!X14=n Default values for each setting, and is defined as follows Default AT!X22=nAT!X18 Defined as follows Default CF PPP over AT!X25=nConnection numbers affects the range ofAT!X21. SeeAT!X21 AT!X26=n Utility Commands Utility Commands Internal TA access command reserved for VUStart or display the Result of a Lapd trace Start or Display the Result of a PPP trace Start an AO/DI X.25 Trace Enter the monitor on the next resetSoft reset the unit and enter the monitor Register Commands AT? Register Commands Analog Device Commands Analog Device Commands AT*Fn To be disabled Disable. Recommended for modem/fax callsEnable with default values default Enable using same terminal endpoint identifier as data port Mini-monitor Commands AT Command Result Codes Carrier Connect AT Command Result CodesConnect Protocol Transparent Mode Connect 75T/1200RConnect 1200T/75R Protocol None Index BACP/BOD