OP3                CCITT'88  Q.931 Packet Decode
 
Packet source: TE, length: 50 octets
First few octets: 08 02 00 0d 05 04 03 80 90 a2 18 03 a9 83 97 6c
1   00001000    Protocol Discriminator I.451 (Q.931) Call Control Message
2   00000010    Call reference length=2
3   00000000    Call Reference Flag=0, Origination Side
4   00001101    Call reference value
                Call reference value=13
5   00000101    Message type: Call establishment: SETUP
6   00000100    Var-len Info Element, Type=0000100, Bearer Capability
7   00000011    Length=3
8   10000000    Extension bit=1, Last octet
                Coding standard=00, CCITT standardized in Q.931
                Info transfer capability=00000, Speech
9   10010000    Extension bit=1, Last octet
                Info transfer mode=00, Circuit mode
                Info transfer rate=10000, 64 kbit/s
10  10100010    Extension bit=1, Last octet
                Layer and protocol id: User information layer 1 protocol.
                Recommendation G.711 u-law speech
11  00011000    Var-len Info Element, Type=0011000, Channel Identification
12  00000011    Length=3
13  10101001    Extension bit=1, Last octet
                Interface identifier present flag=0, Interface implicitly ident
                  ified
                Interface type=1, Other Interface, Primary Rate
                Preferred/Exclusive indicator=1, Exclusive; only the indicated
                  channel is acceptable
                D-channel indicator=0, The channel identified is not the D-chan
                  nel
                Channel selection=01, As indicated in following octets
14  10000011    Extension bit=1, Last octet
                Coding standard=00, CCITT standardized in Q.931
                Number/Map: 0, (sub-) channel is indicated by the number in the
                   following octet
                Channel type=0011, B-channel units
15  10010111    Channel Number = 17
16  01101100    Var-len Info Element, Type=1101100, Calling Party Number
17  00001100    Length=12
18  00100001    Extension bit=0, This octet continues through next octet
                Address type=010, National number
                Numbering plan=0001, ISDN numbering plan
19  10000001    Extension bit=1, Last octet
                Presentation Indicator: Presentation Allowed
                Screening Indicator: User provided, verified & passed
20              8f 02 82 01 40 48 51 8c 81 d4                ....@HQ...
30  11000001    1-byte Info Element, Type=100, Reserved
31  01001011    Var-len Info Element, Type=1001011, Reserved
32  00110110    Length=54
                Reserved byte(s): 86 90 c0 9b 19 b8 85 d0 1b 1c 98 1c 1b 1a 9c
                  1a 19 1b
*** Unexpected end of frame
 
 
 
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
 
    SECOND SETUP
 
 
OP3                CCITT'88  Q.931 Packet Decode
 
Packet source: TE, length: 42 octets
First few octets: 08 02 00 0d 05 04 03 80 90 a2 18 03 a9 83 97 6c
1   00001000    Protocol Discriminator I.451 (Q.931) Call Control Message
2   00000010    Call reference length=2
3   00000000    Call Reference Flag=0, Origination Side
4   00001101    Call reference value
                Call reference value=13
5   00000101    Message type: Call establishment: SETUP
6   00000100    Var-len Info Element, Type=0000100, Bearer Capability
7   00000011    Length=3
8   10000000    Extension bit=1, Last octet
                Coding standard=00, CCITT standardized in Q.931
                Info transfer capability=00000, Speech
9   10010000    Extension bit=1, Last octet
                Info transfer mode=00, Circuit mode
                Info transfer rate=10000, 64 kbit/s
10  10100010    Extension bit=1, Last octet
                Layer and protocol id: User information layer 1 protocol.
                Recommendation G.711 u-law speech
11  00011000    Var-len Info Element, Type=0011000, Channel Identification
12  00000011    Length=3
13  10101001    Extension bit=1, Last octet
                Interface identifier present flag=0, Interface implicitly ident
                  ified
                Interface type=1, Other Interface, Primary Rate
                Preferred/Exclusive indicator=1, Exclusive; only the indicated
                  channel is acceptable
                D-channel indicator=0, The channel identified is not the D-chan
                  nel
                Channel selection=01, As indicated in following octets
14  10000011    Extension bit=1, Last octet
                Coding standard=00, CCITT standardized in Q.931
                Number/Map: 0, (sub-) channel is indicated by the number in the
                   following octet
                Channel type=0011, B-channel units
15  10010111    Channel Number = 17
16  01101100    Var-len Info Element, Type=1101100, Calling Party Number
17  00001100    Length=12
18  00100001    Extension bit=0, This octet continues through next octet
                Address type=010, National number
                Numbering plan=0001, ISDN numbering plan
19  10000001    Extension bit=1, Last octet
                Presentation Indicator: Presentation Allowed
                Screening Indicator: User provided, verified & passed
20              30 30 30 30 30 30 30 30 30 30                0000000000
30  01110000    Var-len Info Element, Type=1110000, Called Party Number
31  00001011    Length=11
32  10100001    Extension bit=1, Last octet
                Address type=010, National number
                Numbering plan=0001, ISDN numbering plan
                Address digit(s)
33              30 30 30 30 30 30 30 30 30 30                0000000000