| Signalling
sequence 3 (call setup) |
| User A |
| LE A |
| TE |
| LE B |
| User B |
|
|
| Address
complete |
|
| message (ACM) |
|
| Ringing signal |
|
|
| Ringing |
|
| tone |
|
| or |
|
|
|
|
| Ringing signal
is sent to user B (user B is alerted). |
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| Ringing tone is sent to
user A. |
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| (Ringing tone
is generated locally at LE A or is |
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| sent from LE B
through circuit switched path) |
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