These are REAL Telco T1s and not connected to a PBX. Am I to assume
that even if they are different providers the timing should be the
same? That doesn't make a lot of sense to me.
Thanks,
Waldo
On Nov 9, 2005, at 12:34 PM, Bart Fisher wrote:
My understanding there should only be one timing source per TE410.
You should use a "REAL" Telco T1 for a timing source. - Otherwise,
do not choose any if for example all PBX T1's installed. The
settings is only a priority level for asterisk to obtain the
source. Example: 1 = use this source first choice, 2 = use this
source if source 1 is down, and so on..
Bart
----- Original Message ----- From: "Waldo Rubinstein"
<[EMAIL PROTECTED]>
To: "Asterisk Users Mailing List - Non-Commercial Discussion"
<[email protected]>
Sent: Wednesday, November 09, 2005 9:12 AM
Subject: [Asterisk-Users] Zaptel T1 Timing Source
Hi guys,
I have a question about the timing source parameter in zaptel.conf.
I have 4 T1s coming into a TE410P.
One T1 is with one carrier, who provides timing signal.
The other 3 T1s are from a different carrier, all sharing the
same timing signal.
Based on this, I have in /etc/zaptel.conf something like:
span=1,1,0,esf,b8zs
e&m=1-24
span=2,1,0,esf,b8zs
e&m=25-48
span=3,2,0,esf,b8zs
e&m=49-72
span=4,2,0,esf,b8zs
e&m=73-96
What I have done is set the timing source of the first T1 to be
the primary source for itself.
For the other three T1s, I set the second T1 to be the primary
source for the group of 3 and the other two as secondary sources.
Is this correct?
The reason I ask is because every so often I hear people
complaint about call drops. It doesn't happen to everyone, so I
don't know if it has anything to do with time source selection
and synchronization issues that may be affecting individual
channels. After a report of a call drop, I check dmesg and I
don't really see any errors. Sometimes I just see ... disable
echo cancel... messages on specific channels, but that shouldn't
be a reason to drop a call.
Am I right? Any ideas?
Thanks,
Waldo
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