[cisco-voip] CUPC Issues over VPN

[glyn kennett]

Thanks for the advice Wes. I will speak with our Security guys and see
what options we have open to us.

 

Glyn

 

Glyn Kennett | Unified Communications Team Manager | BT iNet |
Tel: +44 (0)1993 885933 | E: glyn.kennett at bt.com | W: www.bt.com/btinet 

________________________________

From: Wes Sisk [mailto:wsisk at cisco.com] 
Sent: 22 January 2008 20:40
To: glyn kennett
Cc: cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] CUPC Issues over VPN

 

Very SIP dependent.  I believe both of these depend on large SIP
messages which tend to segment/fragment in the network.  Firewalls  and
inspection engines tend to choke on segmented/fragmented SIP.  Try
disabling SIP inspecition/fixup along the path and check for
improvement.  Otherwise, packet capture.

/Wes

glyn kennett wrote: 

Hi,

 

Has anyone had any experience with running CUPC over a Cisco VPN tunnel?
The voice side of things seems to work fine, but presence and IM are
really flaky.

 

For example, if my status goes idle because of the 5 mins inactivity,
when I move my mouse or hit a key, my presence stays as idle, it only
changes back if shut the app down and restart it. IM on the other hand
just seems to be hit and miss, sometimes it works sometimes it doesn't.

 

VPN Ver is the latest (5.0.02.0090)

CUP Server is 6.0.2.1000-27

CUPC ver is 1.2.2

CUCM ver is 6.0.1.2116-1

 

All seems to work fine when running within the LAN/WAN environment.

 

Glyn Kennett | Unified Communications Team Manager | BT iNet |
Tel: +44 (0)1993 885933 | E: glyn.kennett at bt.com | W: www.bt.com/btinet 

 


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