拨号：
命令：ATD<destination phone number>[;]
返回：
| Verbose result code | Numeric code (with ATV0 set) | Description |
| OK | 0 | Command executed (voice) |
| CONNECT <speed> | 10,11,12,13,14,15 | If the call succeeds, for data calls only, <speed> takes the value negotiated by the product. |
| BUSY | 7 | If the called party is already in communication |
| NO ANSWER | 8 | If no hang up is detected after a fixed network time-out |
| NO CARRIE | 3 | Call setup failed or remote user release. |
如：
ATD18005551212;
返回：
OK
Note: Command executed
+WORG:18005551212
Note: Voice call origination sent to Base Station with dial string “18005551212”.
+WCNT: 9
Note: Call Connected, CDMA traffic channel established with service option 9. You can now hear
或
+WEND: 3
Note: Call Attempt failed/ended. Reason 3, signal faded. See section 14.7 Unsolicited commands.
挂断电话：
命令：
ATH
Note : Ask for disconnection
返回：
OK
Note : Every call, if any, are released
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