Specifications

Rev. 8 May.12 Proprietary and Confidential 85

4: Diagnostic Commands

Introduction

This chapter describes commands used to diagnose modem

problems.

Command summary

The table below lists the commands described in this chapter.

Table 4-1: Diagnostic commands

Command Description Page

!CMUX Implement multiplexing mode 86

!CMUXLPBK Configure ports into loopback mode/query loopback state 86

!DIVERSITY Enable/disable CDMA receive diversity 87

!ERR Display diagnostic information 87

!GBAND Set/return the current operating band 88

$QCPDPP Set/report PDP-IP connection authentication parameters 89

$QCTER Set/report TE-DCE baud rate 89

!RXDEN Enable/disable WCDMA/LTE receive diversity 90

!UMTSCHAN Set/report Priority UMTS Channel Selection state 91