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Re: NVX vs. SVSI

 

Hi Ed,
Great information. Some followup questions:
  • Does the current VLAN switching software allow for control of multiple switches or just a "switch stack" or "virtual switch"?
  • I'm curious how switching via VLANs is faster than multicast switching for the same product? When we switch streams to a decoder, the majority of latency to "picture" is the decoder processing time for the new stream...shouldn't make a difference if it's a new stream due to switching VLANs or switching routing. In both cases it's a new stream being directed to the encoder. This is borne out by the fact that if we have an incorrectly assigned VLAN for a decoder (i.e. on our control VLAN vice the streaming video VLAN), when we correct the VLAN assignment the decoder still takes the same amount of time to process the new incoming signal to show on the display. I could see mulit-milli-second delay differences in VLAN vs multicast routing, but multi-second has more to do with the decoder than VLAN vs Multicast switching.

Thanks,
Jeff

-------------------------------------
Jeff Klein, DMC-E
Head Volunteer AV Geek
Faith Baptist Church
Glen Burnie, Maryland
(Website / Twitter)
?/ @FBC_TechTeam
/ @mixingforjesus


"Clothe yourselves, all of you, with humility toward one another, for God opposes the proud but gives grace to the humble." 1 Peter 5:5


On Thu, Mar 31, 2022 at 11:10 AM eoqualls <ed@...> wrote:

Jeff,? In 2010 we were focused on VLAN switching, as it was much faster (instant seamless switching vs slow multi-second switching on other products).? We produced control system drivers to make implementing VLAN switching very simple.? Thorsten, I know you find this hard to imagine, but many of our dealers continue to use VLAN switching for its unmatched performance.? We have VLAN based installations over 10 years old that continue to perform perfectly.

?

In 2016 we decided to add standard network routing via Multicast to our products.? The commercial installers made it clear they had customers that needed this.? Our current firmware supports both VLAN and Multicast switching.? This firmware update is backwards compatible with our devices in the field.? An installation that started as VLAN, can easily be converted to Multicast if standard network routing is desired.

?

One other thing that you might be interested in knowing is that we have plenty of inventory available.? We have always purchased our silicon far in advance, as our circuit board designs are very stable and don¡¯t change frequently.? Our commitment to a stable, long term architecture allows us to confidently purchase our chips far in advance.? It¡¯s the companies that do Just In Time manufacturing that are suffering from the chip problems.

?

Thank you for your consideration.? If anyone here is interested, please let me know if you want to get a demo kit for testing and evaluation.? We also offer online and classroom training for installers.

?

Ed Qualls

Chief Executive Officer

+1-727-475-7033

ed@...


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