HDX 6000 SIP with ESI-200

[bg_btgrp]

I'm trying to setup a Polycom HDX 6000 in a remote office to connect to our ESI-200 in our HQ. The offices are connected via an MPLS and both networks can fully see each other. However, when I setup the HDX to mimic another Polycom that is within the same network as the ESI-200 it fails to register.

Diagnostic pings indicate that the IP is reachable but h.323 and SIP are not for some reason. Although that is true for both the HQ Polycom and the remote, but HQ registers just fine.

I'm not sure which device or network is causing a problem so I'm reaching out to all parties to see if anyone can explain why SIP won't work over MPLS.

If anyone has any suggestions please let me know.

[SteffenBaierUK]

Hello bg_btgrp,

welcome to the Polycom Community.

The community's Video FAQ contains this post here:

• Jun 21,2014 Question: Are there specific Ports in my firewall that I need to open in order to utilize video conferencing?
  
  Answer: Please check the relevant release notes or admin guide for your device under the section “Inbound and Outbound Ports” or "Port usage" => here <=.
  
  In addition check this FAQ post => here <= for more details and troubleshooting suggestions.

• Jun 21,2014 Question: What could be causing one way video or one way audio when utilizing video conferencing?
  
  Answer: Please check the relevant release notes or admin guide for your device under the section “Inbound and Outbound Ports” or "Port usage" => here <= in order to open the relevant firewall ports.
  
  In addition check this FAQ post => here <= for more details and troubleshooting suggestions.

The above FAQ posts should help you to track down the root cause.

Please ensure to provide some feedback if this reply has helped you so other users can profit from your experience.

Best Regards

Steffen Baier

Polycom Global Services

[bg_btgrp · Accepted solution]

Recieved word from ESI this morning with the following information.

All ESI Communication Servers (199, 200, 600 or 1000) do not support Remote SIP Stations; All SIP Phones are restricted to working locally at the MAC Layer in the Comm Server. SIP Phones must be on the same Subnet and Broadcast Domain as the phone system to work. Only the IP Server 900 will support Remote SIP Stations as the 900 supports registration.

So there is really nothing to be done about it, it is a limitation on our phone system not a communication issue with the Polycom. Thanks anyway.