Welltech Dialogic SS7 Protocols ISUP - Manual (Page 27)

Dialogic ® SS7 Protocols ISUP Programmer's Manual Issue 15
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Value Primitive Message
type
Dec Hex
Use
INF 4 0x04 Sends additional call information.
Identification request IDR 54 0x36 Used to request an action regarding
the MCID supplementary service.
Identification
response IRS 55 0x37 Used to respond to the IDR message.
Loop back
acknowledgement
request LPA 36 0x24 Indicates to the network that a
continuity check loop has been applied
to the circuits.
Loop prevention
request LOP 64 0x40 Use with ECT supplementary service.
Network resource
management request NRM 50 0x32 Request modifications to network
resources associated with a call.
Overload request OLM 48 0x30 Used to initiate temporary trunk
blocking.
Pre-release
information request PRI 66 0x42 Used by the application to request end-
to-end information prior to the release
of a call.
Proceeding request ACM 6 0x06 Indicates incoming called party number
is complete.
Progress request CPG 44 0x2c Carries progress information.
Release request REL 12 0x0c Initiates call clearing.
Release response RLC 16 0x10 Confirms that application has
completed call clearing. (Used when
call clearing has been originated by the
ISUP module).
Request information
request INR 3 0x03 Requests additional call information.
Resume request RES 14 0x0e Resumes suspended call.
Segmentation
request SGM 56 0x38 Requests that a message segment is
sent.
Suspend request SUS 13 0x0d Suspends call.
Setup request IAM 1 0x01 Initiates outgoing call.
Setup response ANM
CON
9
7
0x09
0x07
Answers incoming call.
Subsequent Directory
Number SDM 67 0x43 Subsequent directory number digits for
overlap signaling
Unrecognised
message request UMT 254 0xfe Allows an unsupported message type
to be sent by the application.
User information
request USR 45 0x2d Requests that user-to-user data is sent.