Eicon Networks DIVA T/A ISDN Modem manual Always On / Dynamic Isdn AT Commands

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Always On / Dynamic ISDN AT Commands

AT!X6=n

X.25 Maximum Window Size. Specifies the X.25 maximum window size. It is

 

sometimes desirable to have a large window size. This is particularly true for satellite

 

networks that have significant transmission delays.

 

Maximum window size can never be exceeded. If a larger window size is requested

 

when the call is established (through X.25 Facilities field), it is negotiated downward

 

so that the maximum window size is respected.

 

Default: 7.

 

Use a value that is greater than or equal to the default window size.

 

 

AT!X7=n

X.25 Default Packet Size. Specifies the X.25 default packet size. This packet size is

 

used if no packet size is specified in the X.25 facilities field when a call is made.

 

Values: 16, 32, 64, 128, 256, 512, 1024, 2048, 4096.

 

Default: 128.

 

 

AT!X8=n

X.25 Maximum Packet Size. Specifies the X.25 maximum packet size. Maximum

 

packet size can never be exceeded. If a larger packet size is requested when the call is

 

established, it will be negotiated downward so that the maximum packet size is

 

respected.

 

Use a value that is greater than or equal to the default packet size.

 

Values: 16, 32, 64, 128, 256, 512, 1024, 2048, 4096.

 

Default: 256.

 

 

AT!X9=n

Terminal Endpoint Identifier (TEI). Specifies the TEI used for X.25 over the

 

D-channel. Your service provider assigns this value. Possible values are 0 to 63

 

inclusive.

 

Default: 21.

 

 

AT!X10=n

Delay Before Opening 1st B-channel. Specifies the amount of time (in seconds) the

 

throughput on your D-channel must exceed the Opening Threshold (AT!X11=n)

 

before the 1st B-channel is added to the AO/DI connection.

 

For example, if you specify 5 seconds, and the Opening Threshold is 70%

 

(AT!X11=70), once the throughput on the D-channel reaches 70%, there will be a

 

delay of 5 seconds before the 1st B-channel is added to the AO/DI connection. If the

 

throughput drops below 70% during the 5 seconds, the 1st B-channel will not be

 

added to the connection.

 

Range: 0 to 65535.

 

Default: 5 seconds.

 

 

AT!X11=n

1st B-channel Opening Threshold. Specifies the threshold (percentage) that the

 

throughput on your D-channel must exceed before the 1st B-channel is added to the

 

AO/DI connection.

 

Range: 0 to 100.

 

Default: 70.

 

 

AT!X12=n

1st B-channel Closing Threshold. Specifies the threshold (percentage) that the

 

throughput on your B-channel must be below before the 1st B-channel is dropped

 

from the AO/DI connection.

 

Range: 0 to 100.

 

Default: 40.

 

 

DIVA T/A ISDN Modem Reference Guide ◆ Page 50

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Contents Diva T/A Isdn Modem Reference Guide Eight Edition July 206-193-08 Contents What is ISDN? Diva T/A Isdn Modem Reference GuideWhat is ISDN? Isdn Communication Channels ChannelChannel Connecting to Isdn BRI and PRI Basic Rate AccessWhat 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 CommandsAlphabetical 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 INS-Net64, NI-1, or 5ESS, µ law will be used default None defaultDefault1 AT!D3=nNumber. Numbers are separated by a semicolon Default null string this is an optional valueAT!N2=n AT!N3=nOn 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 RingFor example, Connect Upon connection, the Diva T/A reports the DCE speedCall Control Commands Call Control Commands ATAATH Configuration Commands Configuration Commands Use the default settings AT!V0=nProfile 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 Default 1000 bytes AT!X13=n when Bacp is disabled, seeWill be opened after the delay specified by AT!X10 AT!X14=nAT!X18 Default values for each setting, and is defined as followsDefault AT!X22=n Defined as followsConnection numbers affects the range ofAT!X21. SeeAT!X21 Default CF PPP overAT!X25=n AT!X26=nUtility Commands Start or display the Result of a Lapd trace Utility CommandsInternal TA access command reserved for VU Start or Display the Result of a PPP traceStart 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*FnEnable with default values default To be disabledDisable. Recommended for modem/fax calls Enable using same terminal endpoint identifier as data portMini-monitor Commands AT Command Result Codes Carrier Connect AT Command Result CodesConnect Connect 1200T/75R Protocol Transparent ModeConnect 75T/1200R Protocol NoneIndex BACP/BOD
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