Specifications
ISU AT Command Reference  Phase II AT Commands 
Iridium Proprietary Version 2.45 
20 June 2011     43 
6.16  +CPBS - Select phonebook storage 
Set Command: +CPBS=<storage> 
Set command selects phonebook memory storage <storage>, which is used by other phonebook commands. 
<storage> should be of string type enclosed by “”; for example, “FD”. 
<storage> takes the following values: 
  FD  SIM fixed dialing phonebook 
  LD  Last ten calls dialed phonebook 
  ME  ISU phonebook 
  MT  combined ISU and SIM phonebook (default) 
  SM  SIM phonebook 
Read Command: +CPBS? 
Read command returns currently selected memory, the number of used locations and total number of loca-
tions in the memory. Response is in the form: 
  +CPBS: <storage>,<used>,<total> 
where <used> indicates the number of used locations and <total> shows the total capacity of <storage>. 
Test Command: +CPBS=? 
Test command returns supported storages. 
6.17  +CPBW - Write phonebook entry 
Exec Command: +CPBW=[<index>][,<number>[,<type>[<text>]]] 
Execution command writes phonebook entry in location number <index> in the current phonebook 
memory storage selected with +CPBS. Entry fields written are phone number <number> (of address type 
<type>) and text <text> associated with the number. If those fields are omitted, phonebook entry is 
deleted. If <index> is left out, but <number> is given, entry is written to the first free location in the 
phonebook. Both <text> and <number> should be of string type enclosed by ““; for example, 
“John”,”1234”. 
Test Command: +CPBW=? 
Test command returns the location range supported by the current storage, the maximum length of <num-
ber> field, supported number formats of the storage, and the maximum length of <text> field. Response is 
in form: 
  +CPBW: (list of supported <index>s),<nlength>,(list of supported 
<type>s),<tlength> 










