Cisco Endpoints dialing Polycom HDX via SIP on VCS

[alessia01]

We have Cisco/ Tandberg EP dialing polycom HDX EP via SIP on the same VCS infracstructure.There is a Firewall between them.

Have been informed that there has been no Change on the firewall.

Had been working for 3 months.

Cisco calls Polycom No Video

Polycom Calls Cisco  successful.

Firmware Cisco 7.2.1

Polycom 3.1.5

Any one had similar issues?

[1richardlecomte]

I passed this issue on to the network engineers suspecting either one of the ports is being blocked or a truck % of traffic is too small for video streams and is just being blocked despite QOS

[Magnus Ohm]

Hi

I cannot remember the specific bug number but TC7.2.1 have some issues with dialing polycom. I had a case recently on this and the issue is resolved in TC7.3.2. Can you try to upgrade and re-test? I have reproduced your scenario on TC7.2.1 and it does not happen on TC7.3.x. Thanks.

/Magnus

[Lawrence James]

Do you get audio and no video when Cisco calls Polycom?

Is there any packet loss or jitter? 

If you have no packet loss and your are getting 2-way audio and no or one way video this is very likely a firewall issue.

If there is no audio and no video then it could be other issues at play.

What does the call look like on the VCS - any issues? Are you calling by IP or Alias?

[alessia01]

Hi James,

We get audio only when Cisco calling Polycom?

Is there any packet loss or jitter?

Yes one way polycom to cisco

If you have no packet loss and your are getting 2-way audio and no or one way video this is very likely a firewall issue.

release notes from Cisco and Polycom state the following:

From Cisco 7.2.1 release notes.

Polycom HDX 8000HD

3.0.5 H.323/SIP

SIP Transfer does not work (not supported by

Polycom).

H323 transfer reported as “cannot connect” even

when successful.

SIP BFCP/TCP has flaws. This is fixed in Polycom

HDX 3.0.5 and later because BFCP/UDP will be

Preferred.

From Polycom 3.1.5 release notes

Interoperability

Cisco

VIDEO-111656 During Cisco video conferences, HDX system calls connected at only

64 kbps and did not transmit video. This problem has been corrected.

Cisco

VIDEO-104731 3.1.0 When an HDX system called

into the Cisco EX90, the HDX

system warning on the local

interface stated that the call

failed due to an encryption

requirement on the far-end site.

On the HDX system where

the call originates, set the

encryption to Off and

update. Next, set

encryption to When

available and update

If there is no audio and no video then it could be other issues at play.

What does the call look like on the VCS - any issues?

VCS showing No issues

Are you calling by IP or Alias? Calling via SIP

[1richardlecomte]

Good Morning

Audio and no video...sometimes one way video...Usually see some jitter ( less than 5ms )

no packet loss.

Don't think there is a firewall in the way but will check

Calls are usually URI selected from directory by end user. But i have tested using IP and switch back and forth between SIP and H323

Still see no video in stat view.

I see from another post that i need to check Polycom software version

A fix was applied after 5.0.1

Thanks Very Much For The Feedback

Richard