Re: [hylafax-users] Modem Initialization Question

["Siri Vias Khalsa" <sirivias.khalsa@xxxxxxxxxx>]

I would recommend that you search for a timestamp that is in the range
of 5 seconds before to 5 seconds after; this will prevent a half second
difference from getting no information returned.


-Siri Vias
-----Original Message-----
From: hylafax-users-bounce@xxxxxxxxxxx
[mailto:hylafax-users-bounce@xxxxxxxxxxx] On Behalf Of Greg Youngers
Sent: Friday, July 16, 2010 1:31 PM
To: hylafax-users@xxxxxxxxxxx
Subject: Re: [hylafax-users] Modem Initialization Question

Hello Bodo,

I believe we may have been successful. Both servers are in time sync.

I modified the script which queries CallManager - using " date +'%s' "
to write the current system time to a variable DISCO_TIME when it
starts.

date +'%s'

It's nice since it is in the same format as the Cisco dateTimeDisconnect
field.  Then the query can select the first call where
dateTimeDisconnect is <= DISCO_TIME, in addition to original criteria.

I was able to place a valid fax call and then a simulated errant call to
test the query and it did return the faxed-to DID.

I appreciate your experience and assistance.  I guess there is always
more than one way to skin a cat...


Thanks,
Greg


-----Original Message-----
From: hylafax-users-bounce@xxxxxxxxxxx
[mailto:hylafax-users-bounce@xxxxxxxxxxx] On Behalf Of Bodo Meissner
Sent: Thursday, July 15, 2010 12:43 PM
To: hylafax-users@xxxxxxxxxxx
Subject: Re: [hylafax-users] Modem Initialization Question

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Am 15.07.2010 17:34, schrieb Greg Youngers:

> Since the CDR database and its timestamps are on a different server
than
> HylaFAX, do you think the time between the two servers would be in
sync
> enough to rely on if they use the same NTP source?

Hello Greg,

normally the clocks should be in sync, if the servers are running
permanently.
If you switch off a server or stop ntpd for some time allowing the
clocks do develop a difference it will take some time to re-synchronize
the clocks.

To avoid possible clock differences you can do something on the DB
server to get the time stamp from the same system clock.
You could run a program remotely to get the current time from the DB
server or you could create a DB record (in a different table or DB) on
the same server which will used for the time comparison after your
waiting time.


Bodo
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