asterisk users - Jan 2008 - Zaptel timing on TE405P

Hi,

I'm wondering why zttest shows
Best: 99.976 -- Worst: 99.967 -- Average: 99.971469, Difference: 99.971469

Shouldn't it be 100% as timing is hardware and comes from PRI? Am I
missing some kernel config?

Regards,
Atis

My /etc/zaptel.conf is
span=1,4,0,esf,b8zs
span=2,3,0,esf,b8zs
span=3,2,0,esf,b8zs
span=4,1,0,esf,b8zs

#lspci
07:03.0 Communication controller: Digium, Inc. Wildcard TE405P
Quad-Span togglable E1/T1/J1 card 5.0v (rev 02)

#lsmod | grep -P "(zap|zt|wc)"
zttranscode            17808  0
wcusb                  25088  0
wctdm                  46272  0
wcfxo                  21536  0
wctdm24xxp            121024  0
wcte11xp               34848  0
wct1xxp                23456  0
wct4xxp               323904  96
zaptel                202984  215
zttranscode,wcusb,wctdm,wcfxo,wctdm24xxp,wcte11xp,wct1xxp,wct4xxp,tor2
crc_ccitt              10817  1 zaptel


-- 
Atis Lezdins
VoIP Developer,
IQ Labs Inc.
atis at iq-labs.net
Skype: atis.lezdins
Cell Phone: +371 28806004
Work phone: +1 800 7502835

On Thu, Jan 17, 2008 at 03:09:59PM +0200, Atis Lezdins
wrote:
> Hi,
> 
> I'm wondering why zttest shows
> Best: 99.976 -- Worst: 99.967 -- Average: 99.971469, Difference: 99.971469
> 
> Shouldn't it be 100% as timing is hardware and comes from PRI? Am I
> missing some kernel config?
It may be slightly different. Your system clock may be slightly off. But
more importantly, zttest doesn't start and stop messuring time at
exactly the right spot.

-- 
               Tzafrir Cohen
icq#16849755              jabber:tzafrir.cohen at xorcom.com
+972-50-7952406           mailto:tzafrir.cohen at xorcom.com
http://www.xorcom.com  iax:guest at local.xorcom.com/tzafrir