Daisy Chaining 7937Gs

Our Corporate Real Estate Department just purchased an AV system which came with Polycom SoundStation IP7000 Speakerphones and a Multi-Interface Module. The Module allows daisy chaining IP 7000's, adds single HDX digital mic or add aux I/O ports. Includes 100-240V power supply
The IP 7000 is a SIP device and our call manager is no currently setup for SIP. We are only using SCCP endpoints at this point.
We need to be ablet to daisychain two 7937G speaker phones. We were told by Plantronics that we should be able to use the 7937G, but would need to have a Cisco Proprietary Multi-Interface Module since the 7937G is a Cisco Proprietary Device.
Does anyone know if Cisco makes such a device?

Duplicate posts.
Go here: http://supportforums.cisco.com/discussion/12157911/daisy-chaining-7937gs

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I have a MBPro mid 2013 with 1 Thunderbolt port. Just bought a Mac monitor and want to daisy chain a PC monitor to it. Use a Mini DVI to VGA adapter from MBP to PC monitor. How do I daisy chain the 2 monitors?

I have a MBPro mid 2013 with 1 Thunderbolt port. Just bought a Mac monitor and want to daisy chain a PC monitor to it. Use a Mini DVI to VGA adapter from MBP to PC monitor. How do I daisy chain the 2 monitors?

Hall Palm Desert,
if your Mac monitor has Thunderbolt ports, and the PC monitor is on the end of the daisy chain, then you might be able to do it by connecting your PC monitor’s VGA cable to a Mini DisplayPort-to-VGA adapter (e.g. Apple, NewerTech), connecting that cable’s Mini DisplayPort end to one of the Mac monitor’s Thunderbolt ports, and then connecting a Thunderbolt cable between the other port on the Mac monitor and your MacBook Pro.

Camera not recognized unless daisy-chained with external HD

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Can I live with the daisy chain arrangement or will that cause problems importing to the external HD?
Yes and No, respectively.
(That's what I always did before getting an internal 200GB hard drive in my iMac.)

Daisy chain monitor from cinema display MacBook Air 5,2

I know the Mid-2012 MacBook Air is capable of 2 external displays as described here.
The monitor works when plugged directly into the MBA, but not when daisy chained from the back of the cinema display.
It's a dell monitor, and I'm using an Apple Thunderbolt-VGA adaptor.
Is there something I'm missing? Thanks!

As far as my question itself -- why does this happen? Has anybody had this issue on Lion and had it resolved on Mountain Lion?

Can I daisy chain 30" apple monitor to thunderbolt HD on macbook pro?

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Thunderbolt daisy chain problem with display

Hi to everybody,
being a proud new user of a thunderbolt audio interface Apollo Quad since a couple of days i am struggling to set it up without trouble for my secondary display in my Thunderbolt daisy chain...
My setup and connections
MBP Late 2011 17" 16GB RAM running Mavericks and UAD SW 7.11, 1 Thunderbolt port
Promise Pegasus R4 Thunderbolt RAID drive
Apple TB display
Second 26" display connected via DVI/Mini display port adapter
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Hi Ilya,
I am curious why it only happens for one particular Process Chain. Normally displaying a log has nothing to do with the client settings of SCC4 and/or system settings of SE06. My only guess is that it might be created in this system directly and that the system wants to modify anything here.
I am quite sure that the system is "closed" and it's not a Development system, e.g. a Production System. Please confirm.
Anyway, I have one suggestion and that is to check the Object Changeability in the Transport Connection. Go to t/code RSA1, choose the Transport Connection view and click on the push button Object Changeability.
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Please try that with the above mentioned Object Types for Process Chain related Object Types and see if you are able to display the log w/o the pop-up.
You can also refer to SAP Note 337950 - Queries (including objects) cannot be edited for more information.
Thanks,
Sander

Daisy-Chain Thunderbolt Monitors

I have been having a lot of issues since purchasing two new thunderbolt displays. I mounted both displays on my office wall via VESA brackets. I was super happy with how they looked and how they were able to Daisy-Chain together making them the most beautiful full function docking station for my MacBook Pro. I hooked up my mac via the single thunderbolt cable and power cord from monitor 1 and turned on my Mac. As expected the two monitors came to life in dazzling fashion giving me 54in of usable space. My issues began after I disconnected my Mac to go to a meeting. When I returned and reconnected the power and thunderbolt cords and after the usual blinking of the monitors only the Mac and monitor number 1 worked. Monitor 2 (the one daisy-chained to number 1) would not turn on, 27in of blackness. I tried reconnecting, changing the order of the displays, rebooting, and even re-imaging; nothing worked. I Googled it and found a lot of issues that people were having with displays and thunderbolt drives but none offered a solution that worked. after a lot of research I was able to piece together what was happening and a fix that actually worked. The issue is the Thunderbolt ports and they way peripherals get assigned. So the first time I connected the monitors they worked great but when I went to a meeting and connected to a projector or went home and connected to my single thunderbolt monitor there the ports would get reconfigured to run the single monitor or projector. Macs use SMC (System Management Controller) to control many low level functions like lights, fans, power button, and ports. http://support.apple.com/kb/HT3964 Following the SMC reset fixes the port assignment issue and allows the Mac to recognize the daisy-chained monitor or drive. One additional tip is to plug in the power and thunderbolt cable before resetting the SMC. it is a simple keyboard procedure that is easy and works every time. I hoping a firmware update of SMC will make this fix obsolete but until then at least my $2500 display investment is paying off in a lot of beautiful useable space.

Please do not double post - it does not help and things can get very confusing, so I've asked the hosts to remove the duplicate.
Good luck!

Thunderbolt Daisy Chain to a DisplayPort Monitor (Dell 2713HM)?

I have a Mac mini (2011) that supports my Dell monitor (2713HM 27'') at its maximum reslution of 2560x1440 only through a Thunderbolt to Mini-Displayport cable. As this Mac has only Thunderbolt as a fast connection for backup drives I have to add a Thunderbolt chain with the backup device in the middle and the Dell monitor at the end of the chain if I want bakcups faster than Firewire 800 or USB 2.0 (the other possible connections with this Mac). My first attempt with such a setup was the LaCie eSATA Hub. But this does not feed the display signals through, the monitor stays black. Checked in the store with a genuin Thunderbolt monitor from Apple the daisy chain worked.
Can my chain work at all? Is only the Lacie the wrong drive hub? Would it work with a Seagate Desktop Hub, for instance STAE122 or STAE 127?
Can I trick the Mac under Bootcamp as OS to use HDMI for the monitor? Dell officially says that the monitor can only accept 1900x1080 over HDMI, but some have fiddled wth different computers with custom settings that worked with some Monitors but mostly under Linux and to Dell 2711.

TechnoMax wrote:
for instance STAE122 or STAE 127?
FWIW, STAE129 is the current version TB adapter
that is self powered and has TB daisy chain port.
STAE122 and STAE127 are older versions and
not the current model, though there may be stock of
these around. As to whether this will solve your issue,
I don't know.
Can I trick the Mac under Bootcamp as OS to use HDMI for the monitor? Dell officially says that the monitor can only accept 1900x1080 over HDMI, but some have fiddled wth different computers with custom settings that worked with some Monitors but mostly under Linux and to Dell 2711.
The MacMini HDMI port is hardware limited to 1980x1200.

Has anyone been able to use an Apple Thunderbolt to FireWire to daisy chain a dozen or more FireWire drives?

Ever since I realized that I was not able to connect my FireWire daisy chain to my brand new Retina MBP there has been problems. Four months down the road, I am still unable to use my FireWire drives and have experienced terrible problems whenever I connect my FireWire daisy chain to this new Mac.
I have bought two of these adaptors from Apple now and both do the same thing. The daisy chain has been working perfectly for years with my older MBP and still does! There are no problems until I connect to the new Mac.
I have 15 various hard drives in NewerTech and DatOptics enclosures for over 22 TB. When connected to the new Mac, I would have multiple apps just hang, sometimes just Apple apps, sometimes 3rd party. I will not be able to force quit them and they will keep relauching as you can watch them in the Force Quit window. The Finder will hang and there is no relaunching it. I am having to do a force shutdown twice an hour which leaves no time for work!
After four months of this, now I am being told that Apple will buy back my Mac at full price. But I have basically lost the good part of four month’s worth of work because of constantly fighting the new Mac. This is cost me all my savings and I am about to lose a client. It certainly seems that releasing Thunderbolt1 was a huge, huge mistake.
Does anyone know of any large Fire Wire daisy chain working with Thunderbolt?
TIA,
R

Yes, my first post is all about how darn iffy the adaptors are and I have two of them to return now.
I question your answer because I am betting that four drives that are in one enclosure NOT all RAIDed together as one drive, but as four separate drives that those four drive will count as four devices. The daisy chain that I had going had eight drives in TWO quad boxes, four drives in TWO dual drives and another drive in a single enclosure. A total of five “devices” if you will, but also a total of 13 drives that were usually in this daisy chain.
Both of the Apple branded Thunderbolt to FireWire adaptors chocked BIG TIME on this and it works no problem on my older MBP. You basically can not use a new Mac when you are connected to a daisy chain like this!
Just checked the Apple website and indeed, I can get a new MBP with FireWire 800, just not with the Retina display! I wish that I would have known this five months ago before this all started!

Daisy chain two display port monitors (Dell U2913WM) to new Mac mini Thunderbolt?

Everything I read said that I could hook up a display port monitor to a Thunderbolt port on the mac mini. I purchased two display port monitors (Dell U2913WM) that can be daisy chained, and hooked them up. All I get is mirroring. Does anyone know how to turn off mirroring with this setup? I did not get the "uncheck mirroring" option in preferences until I hooked up the second via the HDMI port instead of a daisy chain. The problem with that is, I cannot take advantage of the full resolution through the HDMI. It seems I have wasted my money on two monitors.
Looking for advice on:
1) How to daisy chain these two Dell monitors to the mac mini and turn off mirroring and use an extended desktop, or
2) How to take advantage of the full resolution through HDMI port?
Any help would be greatly appreciated.
Thanks!

So re-reading this thread, I now realize you did exactly what I wanted to do but your issue was having a cloned vs. extended desktop. Oops!
I believe your "nothing plugged in" issue is the cable. I'm not sure that TB cables are backwards compatible with DP - I think it's only the ports. Do you see multiple monitors in "System Preferences > Displays" if you hook the monitors up like you described in your OP?
My Dell U2713H arrived today and it works like a charm with the supplied Mini-DP to DP cable. The built-in display on my 13" mid 2009 MBP still works if not in clamshell mode, although I will mostly use mine in my HengeDock. In the OSD of the monitor, you can access "Display Settings > Display Info" and it will show you the DP capability. Mine is only DP 1.1a and I believe to run 2 of these at full resolution you will need the bandwidth in DP 1.2 which includes MST (daisy-chaining). This could be your problem.
Can you access the same menu in your OSD and report back what your DP compatability is?
Thanks!
mgb

Can I daisy chain a DisplayPort-only monitor through the 2nd TB connector on a WD 8TB My Book Thunderbolt Duo to a mid-2011 Mac Mini?

I'm very tempted by a refurb HP Smartbuy ZR2740w 27" WQHD display, but it doesn't have a HDMI port. It does have DisplayPort.
Since the mid-2011 Mac Mini I have has either HDMI or Thunderbolt to choose from, plus I've just bought an external TB storage system, I think I'd need to connect the monitor to the second TB port on the external TB storage and hope that the external storage would pass the DisplayPort signals along.
I've read that DisplayPort connections are compatible with TB ports on Macs, and that you can daisy chain TB devices.
I don't want to assume those statements hold when I'd need to connect the DisplayPort cable to the 2nd TB port on the external storage.
Anyone know if this will work?
Is it "supported"?
Thanks!
Andrew

23. How do I connect my Mini DisplayPort monitor or monitor using a Mini DisplayPort adapter to my Thunderbolt-equipped Mac when I have other Thunderbolt devices connected?
When connecting a Mini DisplayPort display or a display using a Mini DisplayPort adapter to a Thunderbolt peripheral (except as described in question 24), make sure the display is connected at the end of the Thunderbolt chain. You can use only one Mini DisplayPort device in the Thunderbolt chain.
Note: Systems with more than one Thunderbolt port, like an iMac, can have more than one Mini DisplayPort monitor or monitor connected with a Mini DisplayPort adapter connected as each Thunderbolt port can support one Mini DisplayPort display.
24. Can I connect my Mini DisplayPort monitor or monitor using a Mini DisplayPort adapter to my Apple Thunderbolt Display?
Mini DisplayPort Monitors or Monitors connecting with Mini DisplayPort adapters will not function when connected through a Thunderbolt Display. They must be connected directly to the Thunderbolt port on the computer or to a non-display device as indicated above.
from
http://support.apple.com/kb/HT5219#23

MacBook Air Thunderbolt-to-FireWire adapter and daisy-chaining external FW drives

Here is my problem—I have a MacBook Air 13" running Mavericks to which I want to attach external FW drive(s). This is easily achievable by using the Thunderbolt-to-FW 800 adapter. And the adapter works great until I try to daisy-chain two external drives. If I attach a second drive to the first one, it immediately unmounts the first drive and I get the 'improperly disconnected drive' warning.
I seem to recall that this was doable in Mountain Lion (about 85% sure). So is this a software or hardware problem? And, to go even deeper into the weeds, my two external FW drives are self-powered (no external power supply). So if I got wall warts for these drives, would it work? Or am I remembering this incorrectly and the adapter never supported daisy-chaining?
The external drives are a pair of G-Tech G-Drive minis, but one is a year to 18-months older than the other one, which means it probably has an older FireWire chipset, but on the other hand, they do mount successfully as self-powered FW 800 drives from a native FW 800 port, or even from a daisy-chain originating from a FW 800 port. Anyone have any suggestions?

I have 4 FW devices chained together and use the TB->FW dongle. They all have power bricks. I have several bus powered devices. Some are quirky, some just don't function, two work reliably. There's no question it is all about how much power they need and TB doesn’t supply enough. Bottom line for me: my bus powered FW drives are soley relegated to use with my last FW equipped computer and when it does they will too.

Second iMac;what happens if you daisy-chain, how to do it?

I recently bought a new iMac quad-core i7, 27".
I am interested in the possibility of using the earlier iMac,which is a 2.4 dual core 24" running Snowy as a second HD and as my dual monitor- would like to try to get it to act as extended desktop monitor.
I do photography and currently use a 24" Cinema HD for my second monitor.
My question is about the possibility of using the older iMac as a slave additional HD and extended desktop,(why waste the 300G it's got perking inside?),wondering if they'll daisy chain or recognize each other properly, and doing the extended desktop across 2 iMacs is possible? Can you do a 3 monitor display in this config? That would be pretty sweet....the more landscape the better!
I've read about multi-laptops config'ed as "super computer",(I remember Apple had an article about multiple MBP's doing this some time ago), but I'm more of a photog-dog than a gear geek. LOL!
Any input would be welcome!!! THANKS!
CHEERS!
Message was edited by: hosshead

My recommendation would be to connect the old machine via Target mode to the new machine. You can then use the old machine's storage however you cannot use it's monitor. If you want a 3rd monitor then you will need to get a 3rd external monitor, the old machine cannot be utilized as one. You would need something like this to make it work. However this being said this would only make the old computer a storage device, IMHO a total waste or resources. I'd recommend using it for other things, use it for other things like a media server or something. For the additional storage get yourself a good FW800 external HD to use for that.
Roger

Only One FireWire Jack on MacBook Pro - will daisy chaining work?

So I installed L8 on my MacBook Pro and put all the Content and GarageBand Loops on my external Lacie drive via Firewire. I also plan to record to the external drive via FireWire. However I also connect my Onyx 1640 to my MacBook Pro via Firewire.
I've only one FireWire Jack on my MacBook Pro but need two. Is there a work around for this? Can I just plug my Onyx into the External HD and only the HD to my Mac? (Is this daisy chaining?)

Daisy chaining as you described is possible with firewire (as long as you have a device with two firewire ports, of course!), but too much I/O and you can saturate the firewire bus. (How often this happens in reality, I don't know. Anyone?)
If your MacBook Pro has an express card slot, a solution might be to buy a firewire express card/34. That way, you can have the audio interface on the firewire bus, and the hard drive on the separate express card bus. I also think most of the firewire express cards come with TWO inputs, so you'll even get an extra.

How can I write to multiple daisy-chained network serial addresses through a single COM port?

I have a VI to write to 3 PI Mercury motor controllers using daisy chained RS232 connected via a Prolific USB-to-Serial adapter. I know that it is possible to talk to the individual controllers because the PI terminal that I have recognises the addresses of multiple controllers and designates them Device 1,2,3. The VISA resource name when configuring the port just comes up as COM5 most of time, with seemingly no way to specify an address on that COM port. Occasionally the VISA resource is ASRL5::INSTR and as this is disconnected and re-connected, this address moves up a number (e.g ASRL7::INSTR). Can anybody tell me how I can configure my serial communication to allow me to individually communicate with the different devices through a single COM port?

What does the manual say about addressing? RS-232 is not multidrop, the resource name is correct, and there is no additional configuration needed. There would have be a specific write in order to address a certain controller.

Daisy Chaining 7937Gs

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