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 .
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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
Service ID Preference
Description:
In addition to being able to set the side preference, and specifying the cellular channel side used by the
modem, the user can also specify the preferred carrier that the connection should be made with. Parts of
the information broadcast by the network may include three pieces of information used to identify the
carrier. These identifiers are the Service Provider Identifier (SPI) the Service Provider Network Identifier
(SPNI) and the Wide Area Service Identifier (WASI).
All of these parameters do not need to be sent by the carrier. Each carrier configures their network to use
some or all of these to identify themselves in the various regions of the country where they operate. Some
settings are specific to each region while others are fixed for the entire country. Please contact your
carrier before setting these values.
The Service ID Preference settings work in conjunction with register S116. Unless register S116 is set
properly, the values of register 111 may not have the desired effect.
Format:
ATS111?
Query Service ID Preferences
ATS111=<SPI>/<SPNI>/<WASI>
Set Service ID Preferences
Acceptable range of values
0 to 65535
Don’t care value setting
0
Example
ATS111=0/1206/12300
SPI = Don’t care
SPNI = 1206
WASI = 12300
Validity:
Other Considerations:
For version 1.0 networks (in the process of being phased out) the Service Provider Identifier should be set
to 0 if service provider ID preferences are used.
Related Topics:
