You are here: CSP Developer’s Guide: Internet Protocol > C H.323 Call Flows and Message Traces > Call Release Call Flows

Call Release Call Flows

Host Initiated Call Release

Message Trace

Receive Release Channel

H->X

[00 11 00 08 00 00 01 00 02 0d 03 00 a8 14 0d 03 00 00

01]

X->H

[00 07 00 08 00 00 01 00 10]

Send Release Complete

----- H.225 Call Signaling -----

H225:

H225: Protocol discriminator = 8

H225: Length of call reference = 2

H225: Call reference field = FCD8

H225: 1... .... .... .... = Message to originator

H225: .111 1100 1101 1000 = Call reference value = 31960

H225: Message type = 90 (Release Complete)

H225:

H225:

H225:

H225: ----User-User Information----

H225:

H225: Information element identifier = 126 (User-User)

H225: Length = 31

H225: Discriminator = 5 (X.208/X.209 (ASN.1))

H225:

H225: Flags = 05

H225: 0... .... = No extension values present in H323-UserInformation

H225: .0.. .... = user-data is not present

H225: ..0. .... = No extension values present in h323-uu-pdu

H225: ...0 .... = nonStandardData is not present

H225: .... 0... = No extension values present in h323-message-body

H225: h323-message = 5 (Release complete)

H225: Flags = C0

H225: 1... .... = Extension values present in ReleaseComplete-UUIE

H225: .1.. .... = ReleaseCompleteReason is present

H225: Protocol id = {0.0.8.2250.0.2}

H225: Reason = 0 (No bandwidth)

H225: .1.. .... = Extension length determinant

H225: Number of extension = 25

H225: Flags = 08

H225: 0... .... = callIdentifier is not present

H225: Length of callIdentifier = 17

H225:

H225: Flags = 00

H225: 0... .... = No extension value(s) present in callIdentifier

H225: Guid = 5D0D95950952D61198CE0050DAD08480

H225:

Receive End Session

H245 Msg RCVD

4a 40

Send End Session

H245 Msg SENT

4a 40

Send Channel Released with Data

X->H

[00 5d 00 69 00 14 01 00 01 0d 03 00 a8 14 02 02 1e 2a 00 05

01 04 00 04 00 00 00 00 01 05 00 04 00 00 00 00 01 11

00 04 00 00 00 de 01 10 00 04 00 00 00 00 01 12 00 04

00 00 0a f8 03 00 33 00 1e 00 04 27 4e 00 02 00 10 27

92 00 04 87 77 37 b7 27 93 00 04 00 00 3c 40 27 e3 00

02 03 07]

Network Initiated Call Release

Message Trace

Receive Release Complete

--- Q.931 (CCITT Q.931 Call Control)---

Protocol Discriminator : 8 [0x08] Q.931 User-Network Call Control Msgs

Call Ref Value Length : 2 bytes

Call Reference Field : 0x7CDB

: 0... .... : Flag=0, Origination Side of CRV

: .101 1011 : CRV=31963, [0x7CDB]

Message Type : Release Complete

Information Element : 126, User-User

Length of Info Element : 30 bytes

Octet 3 : 0x05

: 0000 0101 : Protocol = X.208/X.209 (ASN.1)

--- H.323 (ITU-T H.323 User Information)---

H323-UserInformation :

h323-uu-pdu :

h323-message-body :

releaseComplete :

protocolIdentifier : itu-t

: recommendation

: h

: 2250

: version

: 2

reason : undefinedReason

callIdentifier :

guid : Hex( 63 0D 95 95 09 52 D6 11 98 CE 00 50 DA D0 84 80 )

: [end of pdu]

:

Send Release Complete

--- Q.931 (CCITT Q.931 Call Control)---

Protocol Discriminator : 8 [0x08] Q.931 User-Network Call Control Msgs

Call Ref Value Length : 2 bytes

Call Reference Field : 0x7CDA

: 0... .... : Flag=0, Origination Side of CRV

: .101 1010 : CRV=31962, [0x7CDA]

Message Type : Release Complete

Information Element : 8, Cause

Length of Info Element : 3 bytes

Octet 3 : 0x00

: 0... .... : Extension Bit = 0

: .00. .... : Coding Standard = ITU-T

: ...0 .... : Spare Bit

: .... 0000 : Location = User

Octet 3a : 0x00

: 0... .... : Extension Bit = 0 (Invalid Ext Bit)

: .000 0000 : Recommendation = Q.931

Octet 4 : 0x90

: 1... .... : Extension Bit = 1

: .001 .... : Cause Class = Normal Event

: .... 0000 : Cause Code = Normal Call Clearing

:

Information Element : 126, User-User

Length of Info Element : 30 bytes

Octet 3 : 0x05

: 0000 0101 : Protocol = X.208/X.209 (ASN.1)

--- H.323 (ITU-T H.323 User Information)---

H323-UserInformation :

h323-uu-pdu :

h323-message-body :

releaseComplete :

protocolIdentifier : itu-t

: recommendation

: h

: 2250

: version

: 2

reason : undefinedReason

callIdentifier :

guid : Hex( 61 0D 95 95 09 52 D6 11 98 CE 00 50 DA D0 84 80 )

: [end of pdu]

:

Receive End Session

H245 Msg RCVD

4a 40

Send End Session

H245 Msg SENT

4a 40

Send Channel Release with Data

X->H

[00 5d 00 69 00 17 01 00 01 0d 03 00 a8 16 02 02 1e 2a 00 05

01 04 00 04 00 00 00 00 01 05 00 04 00 00 00 00 01 11

00 04 00 00 1e 9f 01 10 00 04 00 00 00 00 01 12 00 04

00 02 22 8c 03 00 33 00 1e 00 04 27 4e 00 02 00 10 27

92 00 04 87 77 37 b7 27 93 00 04 00 00 3c 80 27 e3 00

02 02 0c]

A computer, attached to the Excel platform through an RS-232 or Ethernet link, from which you run the telecommunications application that controls the Excel platform.
Call signaling protocol for setup and termination of calls.
Comité Consultatif Internationale de Telephonique et Telegraphique (now ITU)
Setting up, monitoring, and tearing down calls.
Message delimiter (SS7 bit pattern - 01111110)
ITU-T standard defines a set of call control, channel setup, and codec specifications for transmitting real-time voice and video over networks that do not offer guaranteed service or quality of service.
International Telecommunications Union (UN)
International Telephone Union – Telecommunications sector (UN)