BSMI Debugging
November 2009 108

Figure 8. IE Formats

p
Byte
8765 4321
0
8765 4321
0000 0100
0000 0010
1000 1000
1001 0000
1
2
3
-
04
IE Identifier
Length of IE (in bytes)
Contents of IE
02
88
90
Transfer capability
Transfer mode and rate

Table 4. Q.931 Information Element Identifiers

IE Identifier Bits Hex Information Element
0000010004 Bearer capability
0000100008 Cause
0001010014 Call state
0001100018 Channel identification
000111101E Progress indicator
001011002C Keypad
0011010034 Signal
0100000040 Information rate
0100001042 End-to-end transit delay
0100001143 Transit delay selection and indication
0100010044 Packet-layer binary parameters
0100010145 Packet-layer window size
0100011046 Packet size
011011006C Calling party number
011011016D Calling party subaddress