How do I install a Sangoma VoiceTime USB Device?

What is the Sangoma VoiceTime USB Device?

The Sangoma VoiceTime UT50 USB Device is a USB key that provides a source of timing to Asterisk.  Previously, this had to be done via a 2 port FXO card or similar analog device.  The benefit to using the VoiceTime UT50 is that it is much less expensive than an analog card.

Asterisk needs a clock signal to do recording, conferencing, etc, and Asterisk gets this clock signal from Zaptel.

Normally Zaptel gets it's clocking from a Zaptel hardware card but when Zaptel doesn't find any hardware it loads a program called ZTDUMMY.  ZTDUMMY is simple program that uses software  to emulate a 1ms second timer.  The problem is that ZTDUMMY is not reliable when the system gets bogged down a little.

The Sangoma VoiceTime UT50 provides a reliable source of timing to Asterisk without having to purchase a separate analog card that will not be used in the system.

More information about the Sangoma VoiceTime UT50 can be found here:

http://www.sangoma.com/products_and_solutions/hardware/specialty_tools.html

Minimum System Requirements:

PBXtra 4.1 (CentOS 4.3)

trixbox Pro 4.1.2 (CentOS 4.4)

note: Fedora Core 3 PBXtra's are not supported at this time.

Required Software:

FONdetect-4.1.1865

PBXtra:

wanpipe_voicetime-modules-2.6.9-34.EL-1.0.9-2

wanpipe_voicetime-modules-2.6.9-34.ELsmp-1.0.9-2

trixbox Pro:

wanpipe_voicetime-modules-2.6.9-42.EL-1.0.9-2

wanpipe_voicetime-modules-2.6.9-42.ELsmp-1.0.9-2

Install Instructions:

The first step is to install the Sangoma VoiceTime UT50.  To do so, log into your Fonality PBX and shut it down with:

shutdown -h now

Once the system is down, plug the UT50 into one of the USB ports.

*** NOTE:  If you are using a Dell 1950 III, there are USB ports inside the chassis that will allow you to install the UT50 without it being exposed outside of the server.

Power your server back on and SSH into it as root.

[root@trixboxNNNNNN ~]# yum clean all

Cleaning up Everything

2 headers removed

1 packages removed

3 metadata files removed

0 cache files removed

1 cache files removed

[root@trixboxNNNNNN ~]# yum update FONdetect

[root@trixboxNNNNNN ~]# yum install wanpipe_voicetime-modules-2.6.9-42.EL wanpipe_voicetime-modules-2.6.9-42.ELsmp

perl /var/adm/bin/ip.pl -i

dmesg |grep USB

wanpipe_voicetime: Loading WANPIPE VoiceTime (USB) Driver - v1.0.9

wanpipe_voicetime: Probing WANPIPE VoiceTime (USB) device on 2 ...

zttest

Opened pseudo zap interface, measuring accuracy...
99.987793% 99.987793% 99.987793% 99.987793% 99.987793% 99.987793% 100.000000% 
99.987793% 99.987793% 99.987793% 99.987793% 99.987793% 99.987793% 99.987793% 99.987793% 
100.000000% 99.987793% 99.987793% 99.987793% 99.987793% 99.987793% 99.987793% 99.987793% 
99.987793% 99.987793% 100.000000% 99.987793% 99.987793% 99.987793% 99.987793% 99.987793% 
99.987793% 99.987793% 99.987793% 99.987793% 99.987793% 99.987793% 99.987793% 99.987793% 
99.987793% 99.987793% 99.987793% 99.987793% 99.987793% 99.987793% 100.000000% 99.987793% 
99.987793% 100.000000% 99.987793% 100.000000% 99.987793% 99.987793% 99.987793% 99.987793% 
100.000000% 99.987793% 99.987793% 99.987793% 99.987793% 100.000000% 99.987793% 99.987793% 

--- Results after 64 passes ---
Best: 100.000000 -- Worst: 99.987793 -- Average: 99.989319