This message is sent by the user or the network to indicate that the equipment sending the message has released the channel (if any) and call reference. The channel is available for reuse, and the receiving equipment shall release the call reference. See Table 3-30.
RELEASE COMPLETE message content
Message type: RELEASE COMPLETE |
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Information element |
Reference |
Direction |
Type |
Length |
Protocol discriminator |
Both |
M |
1 |
|
Call reference |
Both |
M |
2-* |
|
Message type |
Both |
M |
1 |
|
Cause |
Both |
O (Note 2) |
2-32 |
|
Display |
n ® u |
O (Note 3) |
(Note 4) |
|
User-user |
u ® n |
O (Note 5) |
(Note 6) |
|
NOTES 1. This message has local significance; however, it may carry information of global significance when used as the first call clearing message. 2. Mandatory in the first call clearing message, including when the RELEASE COMPLETE message is sent as a result of an error handling condition. 3. Included if the network provides information that can be presented to the user. 4. The minimum length is 2 octets; the maximum length is network dependent and is either 34 or 82 octets. 5. User-user information may be sent if RELEASE COMPLETE is the first clearing message and the access connection has not yet reached the active state and Q.931/X.25 mapping service is provided by the network. However, user-user information is not sent if the access connection has reached the active state since X.25 [5] procedures would be used for this information transfer. 6. The minimum length is 2 octets; the standard default maximum length is 131 octets. |
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