Dialogic 6.2 - Manual (Page 106)

BSMI Debugging
November 2009 106
„ The Message type value 0x05 identifies the D-channel message
as a SETUP; refer to Table 3 on page 106 for possible Q.931
message type values.
Figure 7. Message Structures
Example
Byte
Bits
8 7 6 5 4 3 2 1
0 0 0 0
General Message
Bits
8 7 6 5 4 3 2 1
0 0 0 0 1 0 0 0
0 0 0 0 0 0 0 1
0 0 0 0 0 0 0 1
0 0 0 0 0 1 0 1
Example SETUP Message
See Figure 8
1
2
3
-
08
01
01
05
Protocol Discriminator
Call ref length
Flag Call reference value
Message type 0
Other Information Elements
(IEs) as required
See Figure 8
Table 3. Q.931 Message Types
Message Type Bits Hex Message
0 0 0 0 0 0 0 1 01 Alerting
0 0 0 0 0 0 1 0 02 Call Proceeding
0 0 0 0 0 1 1 1 07 Connect
0 0 0 0 1 1 1 1 0F Connect Acknowledge
0 0 0 0 0 0 1 1 03 Progress
0 0 0 0 0 1 0 1 05 Setup
0 0 0 0 1 1 0 1 0D Setup Acknowledge
0 1 0 0 0 1 0 1 45 Disconnect
0 1 0 0 1 1 0 1 4D Release
0 1 0 1 1 0 1 0 5A Release Complete
0 1 0 0 0 1 1 0 46 Restart
0 1 0 0 1 1 1 0 4E Restart Acknowledge