You can redirect sound from server to terminal sound card. To redirect sound to terminal specify in configuration file:
sound = on
If there's still no sound continue reading.
By default WTware uses ALSA sound card drivers library. For terminals released before 2013 year you can try to specify in configuration file:
sound = oss
Then terminal will try to work with POSS sound card drivers library. Unfortunately this library is not developed anymore, but for old terminals sometimes it helps.
Make sure that terminal server configuration allows sound redirection. Try to redirect sound to some Windows-computer, connect it to the same server with the same user using standart terminal services client mstsc.exe (Start > Programs > Accessories > Communications > Remote desktop connection).
In order to make Windows Server redirect sound sometimes you are to perform next step: Start > Run > gpedit.msc > Computer configuration > Administrative templates > Windows components > Terminal services > Client/Server data redirection > Allow audio redirection. Turn this setting to "On".
If mstsc.exe plays sound while connecting to the same server by the same user, and wtware doesn't play:
You'll see on this page list of all sound devices detected by terminal. Press "Beep!" buttons and determine which makes sound. Instead of sound=on line specify line that is near this "Beep!" button. It should be line like this:
sound = on, hw:1:0
hw:1:0 tells terminal which sound device to use.
In WTware there's built-in SIP client linphone. Mostly convenient to use USB headset for SIP telephony. linphone uses two sound devices. One (it's better to use computer sound card with connected loudspeakers) plays call sound. Second (it's better to use separate USB headset) reproduces conversation.
By default WTware redirects incoming call to embedded sound card. For conversation it uses USB sound card, when determines. If USB sound card is not detected, conversation will be performed by embedded sound card too.
If WTware mistakes and sound doesn't play, you can specify sound devices in configuration file:
SIP = user:email@example.com, ring:1:0, talk:2:0
Correct digits instead of
:2:0 you can determine by the same interface
of sound card testing on terminal web-server. Device
plays sound of incoming call. Device
talk: will reproduce conversation.