I'm implementing some new Telepresence devices:
MCU 5310 (4.4)
C40 codec (7.0.2)
C20 codec (7.0.2)
Different subnet from site A
I've enabled H.323 & SIP on the VCS-C and have tested multiple calls between Site A & B. Whenever the calls go out H.323 to SIP, or SIP to H.323 from the C40 to the C20 or the other way around, there's no problem. Both sites receive video and audio.
Whenever I force the same protocol. i.e, H.323 to H.323 or SIP to SIP and make the same calls, site B (C20) doesn't get video from Site A (C40). However the C40 is receiving both video & audio from the C20. What's interesting is that if I make the same calls from the MCU, which is also at Site A, then there's no problem. So the problem is between the C40 and C20.
Since I'm not physcally at the sites because I'm doing this implementation remotely, I can only rely on the stats I get from the GUIs. I have attached a picture the customer took from the C20 screen.
C40-C20 H.323-SIP - call ok
C20-C40 H.323-SIP - call ok
C40-C20 SIP-H.323 - call ok
C20-C40 SIP-H.323 - call ok
MCU-C20 H.323-H.323 - call ok
C40-C20 H.323-H.323 - No video received on C20
C40-C20 SIP-SIP - No video received on C20
C20-C40 H.323-H.323 - No video received on C20
C20-C40 SIP-SIP - no video received on C20
So it seems that there's only a problem on the C20 during non-traversal calls. I do not want to use a Traversal license between these 2 endpoints.
Thank you for your help. Any input would be greatly appreciated.
I see that there is duplicate thread on this (there are problem on the forum regarding multiple posts) and I see that other have suggested similar things to what I have done.
I would suggest that there is an issue on Site A not allowing traffic from Site B. I also see that your "ping" does not work, however, be aware that an ICMP ping may be blocked yet UDP traffic can pass. I can't remember if the C series CODEC allow for UDP pings when you enable root mode and login as root (I know the VCS does), however, I would ask, why the firewall is so restrictive if Site A trusts Site B?