Chapter 19 – Qualcomm Defined AT Commands for CDMA Operation

R-SCH Selection $QCMIP

Description: This command is used to enable or disable mobile IP.

Values:

<Val>

 

 

0: Mobile IP disabled, Simple IP only.

 

 

1: Mobile IP preferred. In the initial MIP registration, if the network does not support

 

Mobile IP, then the mobile automatically reverts to Simple IP (force a PPP renegotiation

 

by sending a LCP C-Req).

 

 

However, if a Mobile IP session is registered, and then enters a network that does not

 

support Mobile IP, the mobile will drop the session and inform the upper layers of the

 

failure (for example, by dropping DCD to a laptop).

 

2: Mobile IP only. The mobile will make data calls only when Mobile IP is supported in

 

the network. During a MIP session, if the mobile hands off to a network that does not

 

support MIP, then the mobile will drop the session and inform the upper layers of the

 

failure (for example, by dropping DCD to a laptop). This value is stored in NV. The

 

default value is 0.

 

 

Note 1: When the AT$QCMIP value is changed to 1 or 2, this modifies the value of

 

AT+CRM to 2. AT+CRM with a value of 2 enables network model operation. Changing the

 

value to 0 will reset the AT+CRM to its original value.

 

Note 2: This change is not supported by DMSS 5105 Release 1.0 Commercial.

 

Note 3: When the AT$QCMIP value is changed to 1 or 2, this modifies the value of

 

AT$QCMDR to 3. AT$QCMDR=3 means that the mobile tries Service Option 33 when it is in

 

a cdma2000 network that advertises P_REV 6 or higher. When AT$QCMIP >0 and an

 

attempt is made to set AT$QCMDR to less than 3, the mobile will return ERROR.

 

Note 4: When the AT$QCMIP value is set to 1 or 2, this changes the value of AT$QCPKND

 

to 0. This means that the mobile must see a dial string (such as ATDT#777) on the serial

 

interface before it will originate packet data calls. When AT$QCMIP >0 and an attempt is

 

made to set AT$QCPKND to 1, the mobile returns ERROR.

 

Note 5: This AT command is for test purposes only and should not be changed by the

 

mobile phone user.

 

Syntax:

Command syntax: AT$QCMIP=<Val>

 

 

Command

Possible Responses

 

 

 

 

AT$QCMIP?

$QCMIP: 1

 

Note: Display the current setting

OK

 

 

Note: Command is valid

 

 

 

 

AT$QCMIP=?

$QCMIP: (0-2)

 

Note: Display the range of values

OK

 

 

Note: Command is valid

 

 

 

 

AT$QCMIP=0

OK

 

Note: Set value to 0

Note: Command is valid

 

 

 

Multi-Tech Systems, Inc. CDMA Wireless AT Commands - PN S000294C

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Multi-Tech Systems CDMA Wireless Modem SCH Selection $QCMIP, Command syntax AT$QCMIP=Val, At$Qcmip? At$Qcmip=?, AT$QCMIP=0