N O V A T E L W I R E L E S S T E C H N O L O G I E S L T D .
7 0
A T C o m m a n d S p e c i f i c a t i o n - E x p e d i t e a n d M e r l i n
W i r e l e s s I P M o d e m s
Last network registration error code
Description:
Should the modem fail to register within a sizable window of opportunity, typical times vary from 3 to 5
seconds for a “Hot List” match to 30 seconds for a “Wide Scan” match, it may have encountered a
network registration error. To determine if this is the case, the network registration error register can be
read to see if there is a non-zero value. If the value is zero, then the modem has yet to attempt to register
on a valid channel as it has yet to find a channel or form a link to the network.
For non-zero values consult the table below.
Response
Meaning
1
No particular reason given
2
MD-IS not capable of handling the M-ES at this time
3
NEI is not authorized to use this subnetwork
4
M-ES gave insufficient authentication credentials
5
M-ES gave unsupported authentication credentials
6
NEI has exceeded usage limitations
7
Service denied on this subnetwork; service may be obtained on alternate Service
Provider network
8-255
Reserved
For further assistance if a non-zero value is present, please contact your carrier and provide them with this
information.
Format:
ATS200?
To determine last registration error
Validity:
Valid for AT Command mode only.
Other Considerations:
Most Network Registration problems are due to a mismatch of the authentication credentials. These
values are stored in both the modem and the Network MDIS Information database. If these values get out
of sync, registration may not be possible. Problems can be experienced when trying to register on an
alternate carrier through an “interop” agreement link. Because the modems use the internet for
communications, information may be slow in arriving at the intended destination or may be lost along the
way. Interop links introduce additional delays in delivering registration information that can result in
temporary failure to register. This situation should typically not persist for more than 2 minutes.
Related Topics:
