Internal/External Protocol Stacks And Voice Calls - Huawei MU609 Application Manual

HUAWEI MU609 HSPA LGA Module
Application Guide

13.3 Internal/External Protocol Stacks and Voice Calls

WCDMA networks support concurrent internal/external protocol stack services and
voice calls.
GSM/GPRS networks offer limited support for concurrent internal/external protocol
stack services and voice calls.
First Service
Internal
protocol stack
External
protocol stack
Voice calls
The following table describes the process of concurrent internal protocol stack
services and voice calls.
Note:
Command
(UART)
AT^IPOPEN=1,"TCP","172.22.44.33",700
0,6000
OK
^IPDATA: 1,536,No.51:*****...
Issue 02 (2013-09-18)
Concurrent
Service
MO voice call
MT voice call
MO voice call
MT voice call
Internal
protocol stack
External
protocol stack
Settings configured by AT^DVCFG take effect immediately and are effective only in
transparent transmission mode of the internal protocol stack services.
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Concurrent Service Application Scenarios
Service State
Suspend data transmission through the UART
port until a voice call is hung up.
Huawei's extended AT command AT^DVCFG
can be used to configure the priorities of the
internal protocol stack service and MT voice call.
Suspend data transmission through the MODEM
port until a voice call is hung up.
Data connections through the UART port cannot
be established (executing AT^IPINIT fails).
Data connections can be established through
the MODEM port, but data cannot be transmitted
until the voice call is hung up.
Description
Establish a TCP link at the module's
UART port.
The module transmits data in non-
transparent transmission mode.
(Another party calls the module.)
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