Suspend message: A message sent in either direction indicating that the calling or called party has been temporarily disconnected.
| Parameter | Type | Length (octets) |
|---|---|---|
| Message type | F | 1 |
Suspend/resume indicators
3.52
F
1
Call reference (national use)
3.8
O
7
End of optional parameters
3.20
O
1
NOTE - Parameter compatibility information parameter may be received in the future version.
3.1.11 RESUME
This message is sent by the user to request the network to resume a suspended call. See Table 3-12.
TABLE 3-12/Q.931
RESUME message content
Message type: RESUME
Significance: local
Direction: user to network
Information element
Reference (subclause)
Direction
Type
Length
Protocol discriminator
4.2
u ® n
M
1
Call reference
4.3
u ® n
M
2-*
Message type
4.4
u ® n
M
1
Call identity
4.5
u ® n
O (Note 2)
2-10
NOTE – Included when the SUSPEND message used to suspend the call included a Call identity information element.
3.1.18 SUSPEND
This message is sent by the user to request the network to suspend a call. See Table 3-19.
TABLE 3-19/Q.931
SUSPEND message content
Message type: SUSPEND
Significance: local
Direction: user to network
Information element
Reference (subclause)
Direction
Type
Length
Protocol discriminator
4.2
u ® n
M
1
Call reference
4.3
u ® n
M
2-*
Message type
4.4
u ® n
M
1
Call identity
4.5
u ® n
O (Note)
2-10
NOTE – Included if the user wants to identify the suspended call explicity.