[cisco-voip] phones at remote site frequent failing over to SRST, wan issue?

[tony]

Hi Matt,

We are not running remote backups at 1am.  I just wanted to say that the phones unregister randomly.  Sometimes it's at 1am, other times it could be around 5am.  The worse time is when people are in the office and it drops their calls.  To give more details, we have a 10Mbps ethernet circuit from the provider and the phones register to the singapore cm over the dmvpn tunnel.  Please note that we've only seen the vpn tunnel go down a few times.

thanks

----- Original Message ----
From: Matt Slaga (US) <Matt.Slaga at us.didata.com>
To: tony <madgame8 at yahoo.com>; cisco-voip at puck.nether.net
Sent: Tuesday, February 27, 2007 5:17:16 AM
Subject: RE: [cisco-voip] phones at remote site frequent failing over to SRST,wan issue?

Are you running remote backups or something similar that is

oversubscribing the links at 1:00am?







-----Original Message-----

From: cisco-voip-bounces at puck.nether.net

[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of tony

Sent: Tuesday, February 27, 2007 1:08 AM

To: cisco-voip at puck.nether.net

Subject: [cisco-voip] phones at remote site frequent failing over to

SRST,wan issue?



Hi all,



We have a remote site in Australia connected back to our singapore

headquarters, which is home of our callmanager.  Phones in our australia

site register back with the callmanager in Singapore.  If the WAN link

goes down, they would register with the voice gateway in SRST mode.

What we would see in our CM logs is that phones will unregister from the

primary callmanager, try to register with the secondary, and then

attempt to register with srst.  We believe that this is primarily a

circuit issue, but a ticket opened up with the carrier says that there

is no disconnects.  The carrier ran a ping monitor between the two

sites.  Shortly(3 minutes) after the phones go into srst, they will drop

existing calls and register back with the callmanager in singapore.

This seems to happen around once a day and randomly.  Users rarely

report that the internet went down at the same time.  None of their web

sessions or IM clients disconnect.  For example, the phones would

unregister around!

  1am when no one is in the office.  We are running CM 4.1(3) and even

our Australia voice gateways(MGCP) unregister from callmanager.

However, none of the phones in our Singapore office experience any

issues.  Ping times are around 117ms between sites.  Any ideas to get

this resolved?



Thanks!









 

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