Send IPVoice to a remote site

[jrogerom]

Hi, I have a CISCO IPCC Enterprise.
I want to send IPVoice to a remote location.
Actually, I have a TSUNAMI 10BASE-T 2XE1 Spread spectrum 5.8 GHz Digital Radio. WESTERN DIGITAL. and with this equipment I send voice and data.
I use the RJ-45 port (10 MB)on both Tsunamis TO SEND VOICE.
I have a cisco switch ot the main side and a 3COM in the remote site. Everythin works fine.

NOW. To send IPVoice I am going to use a cisco switch WS-C3750-24TS in the main office and a
cisco switch WS-C2950T-24 in a remote site.
I used the following configuration and I could not ping the switch or any other computer IP address.

!(WS-C3750-24TS )
interface FastEthernet1/0/16
switchport trunk encapsulation dot1q
switchport mode trunk
no ip address
no mdix auto
!

! (cisco WS-C2950T-24)
interface GigabitEthernet0/1
switchport mode trunk
!
If I connect the switches directly, using a patch cord I can ping each other. But when i use the TSUNAMI I cannot ping.

Questions:
Is the configuration correct?
Is the TSUNAMI equipment a good choice to send IPvoice?
Is there any other good digital radio equipment that works better to send IP Voice?

Thanks in advance for your help.