Canon FAX-L260i Service Manual page 204

FAX-L260i Chapter 3: Maintenance & Service
c-2) Variable Length Information Elements
The main information element is composed of an information element identifier (1 octet), an length of
contents of information element (1 octet), and an contents of information element (the length of octet
which is shown by the "length of contents of information element").
∆∆
For example, if an length of contents of information element value is "02," the contents of information
element is 2 octets.
The way in which the SETUP message and the main information elements in the clearing message are
displayed on the Dch dump list is shown below.
c-3) Main information elements in the SETUP message
•Bearer Capability (*8)
Number 1 octet : "04"
Number 3 octet : Information transfer capacity
"88": Unrestricted digital
"90": 3.1kHz audio
"80": Speech
•Channel Identification (*9)
Number 1 octet : "18"
Number 3 octet : Information channel selection
"80": No channel
"81": B1 channel
"82": B2 channel
"83": Any channel
•Calling Party Number (*10)
Number 1 octet : "6C"
From number 4 or number 5 octet on*: Number digit (IA5 character)
*: When the most significant bit of number 3 octet is "0," number digits will appear in number 5 octet
onwards. When the most significant bit of number 3 octet is "1," number digits will appear in number 4
octet onwards.
•Called Party Number (*11)
Number 1 octet : "70"
Number 4 octet and on: Number digit (IA5 character)
......
Contents of Information element
Length of contents of information element
Information element identifier (a type of information element)
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