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The clvoip was then compiled and installed under a directory in root. The testprog utility
that accompanied the command line Voice over IP program was run to test that ALSA
was set up correctly. We repeated the procedure for another desktop, also equipped with
an ES1371 sound interface. Then we continued to initiate a VoIP call using clvoip over
ethernet. This was successful.
We then installed the PCMCIA Wavelan cards on both the desktops using a PCI-
PCMCIA Slot and ran the above test again over IEEE 802.11 wavelan.
IEEE 802.11
5.2 The Single Board Computer
When we received the board, we tried to power it up. Since we did not have an ATX
power supply on hand, we tried to use one of the power supplies in the chassis of the
computers in the Linux lab. With TA David Jeffery’s help we were able to power up the
board once. However, when we tried to bring it up again, the board did not power up.
After numerous unsuccessful attempts, we decided to send the board back. On the
board’s arrival at Emac-inc we got a message back saying that the on-board BIOS was
configured wrong. After a few days we got a message saying that the Board had actually
been burnt out on our end.
The folks at Emac-inc graciously consented to replace our Single Board Computer.
5.2.1 Testing VoIP over Ethernet on the Single Board Computer
When it finally arrived, we decided to continue the installation of the VoIP software on
the embedded platform. As we started transferring the VoIP package to our embedded
system, we discovered that it did not come equipped with build and compilation utilities.
So we decided to transfer the compiled ALSA modules to the Single Board Computer
and hope that they worked. We were quickly jolted back to reality when we were
informed by the vendors at Emac-inc that the pre-loaded kernel had a configuration
incompatibility and would therefore not be able to function with ALSA. This was a
potentially crippling blow to our efforts since our VoIP software depended on the ALSA
library for its back-end functionality.
IEEE 802.3 (Ethernet)
(3 Seiten)
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