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IP Configuration for Pre-Authorizing Modems

This command was created in response to customer requests for high volume deployment of modems, and overcomes the time limitations associated with trust enabling. This command allows integrators to input the modem’s IP Address and simultaneously configure the Authentication Sequence Number (ASN) and Authentication Random Number (ARN) values.  The “ASN” and “ARN” are automatically determined by the modem when it stores the IP address.  The response to the AT#110 command lists the EID, the IP, the ASN, ARN and a checksum.  This information can be logged and then transmitted to the specific carrier for entry into the MD-IS database.

Use of this feature, by an integrator, requires specific carrier approval.  Please contact your carrier for more information on the network requirements for this feature.

The “ASN” and “ARN” cannot be specified by the user. That would violate the CDPD Specification.  The carrier issuing the IP addresses must be given the corresponding ASN and ARN information so that the MDIS data base can be updated accordingly.  Without this carrier pre-configuration the modem can not be activated on the network. The standard method of specifying an IP results in the ASN and ARN being reset to 0.  For low volume deployments (less than 20,000 units) the standard method is recommended.

 

Command

AT#110=x.x.x.x/y

Set IP to x.x.x.x, port to y and compute ASN, ARN values. If y is not presented then port 1 will be used.

Response

EID Format : 00-60-D6-nn-nn-nn

IP Format : x.x.x.x (4 numbers 0-255)

ASN Format : hhhh (4 hex digits)

ARN Format : hhhhhhhhhhhhhhhh (16 hex digits)

Checksum Format : hhhh (4 hex digits) LRC

 

HELLO

at\aprog,NRM6812

OK

at#110=207.107.27.17/1

00-60-D6-00-37-89,207.107.27.17,417F,92E4DFD31229F435,14A4

[modem performs software reset here]

HELLO

 

The interpretation of the command's output is:

     

      |                 |        |    |                | 

      |                 |        |    |                Checksum

      |                 |        Current ASN

      |                 IP Address

      EID

 

The checksum covers the output from the first character of the EID (the first 0 in this case) up to and including the comma between the ARN and the checksum. The algorithm used to compute the checksum is CRC-CCITT.

 

Validity

Valid for NRM6812-SM, MINSTREL, MINSTREL PLUS, AND SAGE.