Message type: ALERTING
Significance: global
Direction: both

Information element

Reference
(subclause)

Direction

Type

Length

Protocol discriminator

4.2

Both

M

1

Call reference

4.3

Both

M

2-*

Message type

4.4

Both

M

1

Channel identification

4.5

u ® n

O (Note 1)

2-*

Display

4.5

n ® u

O (Note 2)

(Note 3)

NOTES

1. Mandatory if this is the first message in response to SETUP, unless the user accepts the D-channel indicated in the SETUP message.

2. Included if the network provides information that can be presented to the user.

3. The minimum length is 2 octets; the maximum length is network dependent and is either 34 or 82 octets.