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Chongqing Jinou Science &Technology Development Co., Ltd.
http://www.oemblue.com/ [e-mail]
28
TABLE 1.3: MAJOR DEVICE CLASSES
[Ref #2: Used where a more specific Major Device Class code is not suited (but only as specified
in this document). Devices that do not have a major class code assigned can use the all-1 code until
'classified']
12.4 THE MINOR DEVICE CLASS FIELD
The 'Minor Device Class field' (bits 7 to 2 in the CoD), are to be interpreted only in the context of
the Major Device Class (but independent of the Service Class field). Thus the meaning of the bits may
change, depending on the value of the 'Major Device Class field'. When the Minor Device Class field
indicates a device class, then the primary device class should be reported, e.g. a cellular phone that can
also work as a cordless handset should use 'Cellular' in the minor device class field.
12.5 MINOR DEVICE CLASS FIELD - COMPUTER MAJOR
CLASS
7
6
5
4
3
2
Minor Device Class
bit no of CoD
0
0
0
0
0
0
Uncategorized, code for device not
assigned
0
0
0
0
0
1
Desktop workstation
0
0
0
0
1
0
Server-class computer
0
0
0
1
0
0
Handheld PC/PDA (clam shell)
0
0
0
1
0
1
Palm sized PC/PDA
0
0
0
1
1
0
Wearable computer (Watch sized)
X
X
X
X
X
X
All other values reserved
TABLE 1.4: SUB DEVICE CLASS FIELD FOR THE 'COMPUTER' MAJOR CLASS
12.6 MINOR DEVICE CLASS FIELD - PHONE MAJOR
CLASS
7
6
5
4
3
2
Minor Device Class
bit no of CoD
0
0
0
0
0
0
Uncategorized, code for device not
assigned
0
0
0
0
0
1
Cellular
0
0
0
0
1
0
Cordless
0
0
0
0
1
1
Smart phone
0
0
0
1
0
0
Wired modem or voice gateway
0
0
0
1
0
1
Common ISDN Access
0
0
0
1
1
0
Sim Card Reader
X
X
X
X
X
X
All other values reserved
TABLE 1.5: SUB DEVICE CLASSES FOR THE 'PHONE' MAJOR CLASS
12.7 MINOR DEVICE CLASS FIELD - LAN/NETWORK
ACCESS POINT MAJOR CLASS
7
6
5
Minor Device Class
bit no of CoD
0
0
0
Fully available
0
0
1
1 - 17% utilized
0
1
0
17 - 33% utilized
0
1
1
33 - 50% utilized