this SIM5218 AT command manual - Cooking Hacks

SIM5218 Serial AT Command Set
Count of voice mail message that waits to be got.
Examples
+VOICEMAIL: WAITING,
+VOICEMAIL: WAITING, 5
25 EONS Related AT commands
The module supports EONS function.
25.1 Indication of EONS
OPL INIT
OPL DONE
PNN INIT
PNN DONE
OPL UPDATING
OPL UPDATING
PNN UPDATING
PNN UPDATING
Description
This indication means EF-OPL has been read successfully. Only
after this URC is reported, the AT+COPS can query the network
name that supports EONS function.
Description
This indication means EF-PNN has been read successfully
Description
This indication means the EF-OPL is updating using OTA
message. After updating, the “OPL DONE” should report.
Description
This indication means the EF-PNN is updating using OTA
message. After updating, the “PNN DONE” should report.
26 OTAD Commands
26.1 AT+COTADPHONENUMBER modify OTAD phone number
Description
The command is used to get, add and delete the OTAD phone numbers.
SIM PIN
NO
References
Vendor
SIM5218_Serial _ATC_V1.36 500
5/15/2012