Sierra Wireless DART 200 CDPD Modem manual Dart 200 Cdpd Modem User’s Guide Installation and Setup

DART 200 CDPD Modem User’s Guide 2 Installation and Setup

?

NOTE:

Most carriers and equipment manufacturers follow these guidelines making problem determination easier. If these guidelines are not followed, more ingenuity is required.

The bit definitions in Figure 2-5 are as follows:

∙Channel acquired indicator (bit 7)

∙Automatic registration switch (bit 5)

∙Registration indicator (bit 0)

An odd value in S-Register 57 indicates a registered modem.

If the DART has problems registering, begin problem determination by checking the contents of S-Register 56 with the ATS56? command. The possible return codes are listed below:

∙S-Register 56 Return Codes

Return codes 0 through 7 are suggested by the CDPD specification.

0Reset condition - Also, registration is incomplete but did not time out. Refer to the description of S-Register 126 in the next bullet point for details

1Registration denied - Usually means IP Address is being used by another device. On some systems it could also be an invalid NEI or a credentials mismatch

2Service currently unavailable

3Invalid NEI (IP Address)

4Insufficient authentication credentials

5Unsupported authentication credentials

6NEI has exceeded usage limitations

7Service denied on this subnetwork - service can be obtained on an alternate Service Provider network

250Timer expired waiting for the home MDIS Intermediate System Confirmation (ISC) registration response - Usually caused by router problems between the home and serving MDISs

251MDLP parameters unsupported

252MDLP version unsupported

254Could not access the CDPD network

255Could not de-register because M-ES was not registered

∙S-Register 126 - Registration Progress Indicator

CDPD registration is a four-step process that can, if there are problems anywhere in the system, be delayed or halted at any of the steps. If your registration attempt is unsuccessful, use ATS126? to view S-Register 126 to determine at what step in the registration process progress halted.

0Protocol not active

1Waiting for Temporary Equipment Identifier (TEI) assignment from MDIS

2Link connection establishment pending - waiting for the Unnumbered Acknowledgement (UA) from MDIS

3Encryption key exchange pending - waiting for MDIS Key Exchange (IKE) from MDIS

4Registration pending - End System Hello (ESH) sent, waiting for Intermediate System Confirmation (ISC) from MDIS

Sierra Wireless, Inc. 2-16