SIP spam attack and MCU and vcs - e call

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• video conferencing through vcs-e and vcs - c

  can I make calls using video conferencing devices using vcs - c and vcs - e only? or is cucm involved in the process? also if I set my camera to call using only H.323 and SIP disabled, can I call sip addresses? also if im calling via vcs - c and vcs-e do I need to implement natting to the local address of videoconferencing unit? Lastly can someone please link any document on how to set my vcs - c and vcs-e and my videoconferencing unit to send and receive sip and h323 calls.

  "can I make calls by means of video conference devices using vcs - c and vcs - e only? or is cucm involved in the process? »

  If there are termination points recorded on the CUCM and want to call the end points on the VCS, CUCM is involved in the appeal process as the call goes through the trunk SIP between CUCM and VCS. Even also on the endpoints registered on VCS if they call endpoints on CUCM.

  If end points locally stored on the VCS and making calls to another, CUCM is not involved.

  "also if I set my camera to call using only H.323 and SIP disabled, can I call sip addresses?

  Yes, so that interoperability is enabled on your VCS.

  "also if im calling via vcs - c and vcs-e do I need to implement natting to the local address of videoconferencing unit?"

  No need. The VCS - c and VCS - e will do their work for calls of crossing of firewall. Until the end point is stored on the VCS then an area between these VCS are enabled, you can join located outside the network of endpoints and they can also reach your internal termination points as well.

  The Cisco VCS Expressway and the VCS control - Basic Configuration will be the guide you're looking for.

  http://www.Cisco.com/c/dam/en/us/TD/docs/Telepresence/infrastructure/VCs/config_guide/x8-7/Cisco-VCs-basic-configuration-control-with-Expressway-deployment-guide-x8-7.PDF

  Kind regards

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• 2 MCU and VCS Expressway, routing problem

  Hi all

  We have a design with a group of control VCS (2 members), cluster VCS Expressway (2 members), and a couple of microcontrollers (registred H.323 on VCS control cluster with the same prefix: 90).

  Each highway has a public IP address and incoming calls from outside can only be routed to microcontrollers:

  [email protected]/ * / for MCU_1 and [email protected]/ * / for MCU_2 (we don't have external DNS resolution).

  I put a conversion into motorway of VCS to change [email protected]/ * / to [email protected] / * / and [email protected]/ * / to [email protected] / * /.

  The problem is when someone calls [email protected]/ * / sometimes (randomly) the call is routed to MCU_2 (instead of MCU_1) and if the appellant see the auto attendant.

  The occcurs even then of the appeal [email protected]/ * / (MCU_2), sometimes the call is routed to MCU_1.

  Any idea what can cause this device or a way to make it work well?

  Thanks for help.

  José

  I think still that separate prefix would work, but here are a few ideas:

  Are incoming calls which do not possibly using SIP that is being interoperability H323 or incoming calls all certainly the H323?

  If you want to keep pure H323, you could perhaps just have a search rule/turn on your VCS-E who changed [email protected] to an E164 e.g. 90... and had a search on your VCS - C rule that says 90... stop at the local area.

  I also noticed that you direct calls to [number]@MCU-IP - have you tried to direct all calls to [number]@VCS-C IP instead?  If the VCS is the holder of a registration for a number, it should be able to deliver accordingly.

• Control of VCS and VCS expressway design

  I have a problem with the design of control and track Express VCS. Now, here's two VCS control and a highway. As you know, put on the Internet Highway and a control on my seat. At the same time, I want to put the other control on the management of my company which is in another city. Can it work correctly? How dose it work?

  You must create two zones on VCS Expressway crossing server and a customer journey area by control VCS.

  In other words, you should have a link path by VCS - C connection VCS-E separately.

  Please be sure to set different H.323/SIP port on each VCS - C.

  For example:

  VCS - C1 (Headquarters): area of traversal client pointing to VCS-E 6001 as port H323 and SIP traversal port 7001.

  VCS - C2 (branch): area of traversal client pointing to VCS - E with 6002 as port H323 and SIP traversal port 7002.

  VCS-E: a traversal server zone list for VCS - C1 (6001 as port H323 and SIP traversal port 7001) and other traversal server list for VCS - C2 (6002 as port H323 and SIP traversal port 7002)

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  I turned presence on my VCS - C and VCS-E, but depending on whether I am VPNed or not, I don't see the State of the presence of my side of the firewall.

  I checked for x7.1 Administrator's guide, I looked in the guide of authentication devices, and I'm at a bit of a loss.

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  I have a pretty simple setup - that works very well, could give you some ideas;

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  Authentication is directly with AD and is made on the a WHAT VCS - C regardless of the user is registered with the VCS - C or the VCS-E.

  PUA and presence disabled on VCS-E and activated on the VCS - C, which is used as SIP registrar.

  Authentication on VCS - e:

  Default subfield "do not check".

  Default zone "do not check".

  Traversal server box "do not check".

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  Default subfield "audit powers.

  MOVI area 'audit powers.

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  Course customer area 'audit powers.

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• Tests EX60 UCM and VCS registration

  Hello

  I did a few test with Cisco EX60 a few days ago a the following infrastructure:

  -UCM 8.6.2

  -Cisco VCS control X7.2.2

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  -Csco EX90 series

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  The goal was to try to save the EX60 in SIP mode with UCM and H.323 mode in VCSC and make some calls with EX60 register in both devices, because I have found no documents where it was stated that only I can save EX60, EX90 in VCS or Complutense University of MADRID, but not in both at the same time.

  I recorded the EX90 in VCS and EX60 in VCS (H.323) and UCM (SIP).

  All calls to H.323 devices EX60 send control VCS and all calls all works fine without any problems. If I try to call EX90 to EX60 in SIP mode, the call will be fails. When the EX90 with EX60 H.323 call is connected, the University Complutense of MADRID and using RTMT I saw that the EX60 was on appeal or in busy state.

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  -The presence does not work when the EX60 is under appeal with the other end H.323 in the Complutense University of MADRID, too the BLFs do not work and does not appear the call at the Complutense University of MADRID.

  -Si EX60 is videoconferencing with EX90, the EX60 can receive an audio call to UCM get connect and the presence and the BLFs working properly.

  I find no more problems at the moment.

  Kind regards.

  This isn't a Setup program that you want to use, or register them both to the VCSC or

  Let CUCM control your end point, then h323 must be disabled.

• VCS - C and VCS-E switch to x8.7

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  Is that means whenever I want to make a call ISDN with ISDN LINK, I de-register endpoint of VSC on gateway H323 and SIP pox

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  Thank you

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• Call the flow of VCS-E and VCS - C

  Hi all

  I'm looking for some documents describing the call flow of VCS-E and VCS - C in H.323 as the jpg I have attached.

  (Especially when endpoint dials on internet to the intranet)

  Are there documents like tthat?

  Best regards

  Kotaro Hashimoto

  Call the stream while VCS - E uses the SANCTION for traversal Protocol (almost identical even use H.460.18 to signal flow).

  Please note that this call flow only not understand key messages each Exchange of messages between VCS & endpoint as well as VCS-E & VCS - C.