Dialogic IP Phone 05-2239-009 Manuel D’Utilisation

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Dialogic Corporation

In this scenario, the user application uses the Dialogic

®

 Global Call API to open a Media device, 

configures “Manual” mode of operation and establishes an audio session with the remote device. 
See 

, on page 322 for more information on 

manual mode. A T.38 Fax device is then opened and the application switches from an audio session 
to a T.38 session. 

When the application receives notification that the T.38 session is ready, fax information can be 
sent. Figure 40 shows the scenario diagram. 

The application must not use both Dialogic

®

 Global Call API and Dialogic

®

 IP Media Library API 

functions on the same device. The Dialogic

®

 IP Media Library API calls (ipm_) in Figure 40 are 

shown for informational purposes only. Global Call interacts with the IP Media Library on behalf 
of the application.

IPML

Remote Device Capable of

Signaling, Audio and T.38

App

gc_OpenEx(:N_iptB1T1:M_ipmB1C1)

SETUP with TCS/INVITE to send Origination IP

address and RTP Port number

Call Connected

FAX

fx_open(dxxxB23C1)

dev_Connect(ipmB1C1, dxxxB23C1)

REINVITE/RequestMode to switch to T.38 Fax. Send local

UDP port and IP Address

200OK/RequestMode Ack

Ipm_StartMedia()

Send UDP port number and IP address to

the firmware

Stop the RTP streaming.

Audio Data

Fx_sndfax()

T.38 Data via RTP

GC/cclib

gc_MakeCall()

GCEV_CONNECTED

GCEV_EXTENSION (IPSET_SWITCH_CODEC,IPPARM_READY)

IPVSC/IPML forwards

ipm_StartMedia() to T.38

device based on the

information fro

dev_Connect()

Ipm_GetLocalMedia()

gc_SetUserInfo(IPSET_FOIP,IPPARM_T38_CONNECT)

gc_SetConfigData(IP_MANUAL_MODE)

gc_Extension(IPSET_SWITCH_CODEC,IPPARM_T38_INITIATE)

Ipm_Stop()

gc_UnListen()

GCEV_EXTENSIONCMPLT