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May I know, the meaning of the number that appears behind the "WM: " indication in the "About My Sonos System" dialog? I discover mine seemingly displays random number & the number changes depending on the number of devices that are powered on. For example:



When my PlayBar isn't powered on, my system shows:



Associated ZP: 192.168.1.120

---------------------------------

PLAY:1: Kitchen

Hardware Version: 1.8.3.7-2

IP Address: 192.168.1.118

WM: 1

OTP:

---------------------------------

PLAY:1: Living Room (LS)

Hardware Version: 1.8.3.7-1

IP Address: 192.168.1.104

WM: 1

OTP:

---------------------------------

PLAY:1: Living Room (RS)

Hardware Version: 1.8.3.7-1

IP Address: 192.168.1.105

WM: 1

OTP:

---------------------------------

SUB: Living Room

Hardware Version: 1.8.2.5-2

IP Address: 192.168.1.109

WM: 1

OTP:

---------------------------------

PLAY:3: Master Bedroom

Hardware Version: 1.8.1.2-1

IP Address: 192.168.1.121

WM: 1

OTP:

---------------------------------

PLAY:1: Office

Hardware Version: 1.8.3.7-2

IP Address: 192.168.1.120

WM: 1

OTP:



When the PlayBar is switched on, it shows:



Associated ZP: 192.168.1.120

---------------------------------

PLAY:1: Kitchen

Hardware Version: 1.8.3.7-2

IP Address: 192.168.1.118

WM: 1

OTP:

---------------------------------

PLAYBAR: Living Room

Hardware Version: 1.9.1.10-2

IP Address: 192.168.1.108

Audio In:

WM: 1

OTP:

---------------------------------

PLAY:1: Living Room (RS)

Hardware Version: 1.8.3.7-1

IP Address: 192.168.1.105

WM: 2

OTP:

---------------------------------

SUB: Living Room

Hardware Version: 1.8.2.5-2

IP Address: 192.168.1.109

WM: 2

OTP:

---------------------------------

PLAY:1: Living Room (LS)

Hardware Version: 1.8.3.7-1

IP Address: 192.168.1.104

WM: 2

OTP:

---------------------------------

PLAY:3: Master Bedroom

Hardware Version: 1.8.1.2-1

IP Address: 192.168.1.121

WM: 1

OTP:

---------------------------------

PLAY:1: Office

Hardware Version: 1.8.3.7-2

IP Address: 192.168.1.120

WM: 1

OTP:



& some additional questions:



What does "OTP: " mean?

& why are the hardware versions of my Play:1s different, i.e.: Hardware Version: 1.8.3.7-2 versus Hardware Version: 1.8.3.7-1?
WM:0 means the devices are running on Sonosnet, with at least one wired component.

WM:1 means the device is running in wireless mode direct to your router's wireless network.

WM:2 means the device is connected to the Playbar using 5ghz wireless, ie it's configured as a surround speaker.
Regarding WM:2, how would a device be connected to the Playbar as a surround speaker, for example 2 Play 1s using 5ghz? Do you mean it would be utilizing a 5ghz router in wireless mode?

Thanks.
Regarding WM:2, how would a device be connected to the Playbar as a surround speaker, for example 2 Play 1s using 5ghz? Do you mean it would be utilizing a 5ghz router in wireless mode?

Thanks.

No. The Playbar and components bonded to it talk to each other over 5GHz wireless connections and there doesn't even need to be a 5GHz band on the router. To quote @ratty from another recent thread, "The PLAYBAR talks to its wireless satellites over point to point 5GHz links (using dynamic frequency selection to choose the best channel), rather than the regular fixed channel 2.4GHz SonosNet mesh".



The necessary 5GHz technology is in the Sonos components themselves.
WM:2 is not one I've seen personally, but it makes sense that PLAYBAR satellites will be in a rather different mode when the rest of the system is in WM:1 'Standard Setup' (WiFi mode). They presumably have STP disabled, since the other units do. I'm pretty sure that they'd still be using 5GHz to the PLAYBAR.



PLAYBAR satellites are WM:0 for a system in 'BOOST Setup' (SonosNet mode), and have STP enabled.



What does "OTP: " mean?


No idea.



why are the hardware versions of my Play:1s different, i.e.: Hardware Version: 1.8.3.7-2 versus Hardware Version: 1.8.3.7-1?


It probably signifies nothing other than a different supplier for the odd electronic component.
@ratty: may I know what "STP" mean?
Spanning Tree Protocol
Regarding WM:2, how would a device be connected to the Playbar as a surround speaker, for example 2 Play 1s using 5ghz? Do you mean it would be utilizing a 5ghz router in wireless mode?

Thanks.

No. The Playbar and components bonded to it talk to each other over 5GHz wireless connections and there doesn't even need to be a 5GHz band on the router. To quote @ratty from another recent thread, "The PLAYBAR talks to its wireless satellites over point to point 5GHz links (using dynamic frequency selection to choose the best channel), rather than the regular fixed channel 2.4GHz SonosNet mesh".



The necessary 5GHz technology is in the Sonos components themselves.



Thanks for that, but I'm still somewhat confused! I believe my Playbar communicates to my sub via 5GHz. If so, why have I never seen WM:2 associated with my sub? Likewise my surround Play 1s indicate WM:0 (my other devices are all Ethernet wired). Even when only my Playbar was wired the Play 1s showed WM:0.
Because the OP does not have SonosNet active. You do. Please see @ratty's explanation earlier in this thread.
I believe OTP stands for "one time programmable" (or to that general effect). E.g., it's a write-once device, typically used for things like the pre-boot code. The idea is that you prevent a hacker from changing the early boot code and installing malware/etc that gets loaded before the OS bootstraps. (Remember that Sonos devices are all really an embedded system running Linux under the hood.)
I believe OTP stands for "one time programmable" (or to that general effect). E.g., it's a write-once device, typically used for things like the pre-boot code. The idea is that you prevent a hacker from changing the early boot code and installing malware/etc that gets loaded before the OS bootstraps. (Remember that Sonos devices are all really an embedded system running Linux under the hood.)



Now I know why I get confused! All above completely baffling to me (my fault I know). Think I'll stick to just enjoying using my devices for music and audio!

Thanks to all.

:?
I believe OTP stands for "one time programmable" (or to that general effect). E.g., it's a write-once device, typically used for things like the pre-boot code. The idea is that you prevent a hacker from changing the early boot code and installing malware/etc that gets loaded before the OS bootstraps. (Remember that Sonos devices are all really an embedded system running Linux under the hood.)



I always thought it stood for 'Over (the) Top Protocol' and was linked to the IPv6 networking protocol for 128 bit addressing. Something to do with Cisco and virtual addresses where a WAN is seen as part of a LAN.



I think I have see screenshots on the forum in the past, that shows an IPv6 address next to the OTP entry.



I'm not absolutely sure though... Just something I have seen/read at some point in the past.
My home network has globally routable IPv6 address space. The only thing I've seen in the OTP field of my Sonos units is something that is clearly a version number. I believe if you dig in the various debug items in the Sonos 1400 web server, you will also find reference to "one time programmable" (or similar name). I think it might be in the dmesg file if you have recently rebooted the Sonos device, as its part of the POST process.
Digging up and old thread...



Here are the stats from my Sonos system:



Associated ZP: 192.168.1.10

---------------------------------

Bridge: Bridge

Serial Number: 00-0E-58-E3-44-52:6

Version: 9.1 (build 45156150)

Hardware Version: 1.5.0.0-2

Series ID: X999

IP Address: 192.168.1.14

WM: 0

---------------------------------

Play:5: Living Room

Serial Number: 00-0E-58-58-85-AE:7

Version: 9.1 (build 45156150)

Hardware Version: 1.16.4.1-2

Series ID: P100

IP Address: 192.168.1.10

WM: 0

OTP: 1.1.1(1-16-4-zp5s-0.5)

---------------------------------

Playbar: Lounge

Serial Number: 94-9F-3E-6C-72-E7:5

Version: 9.1 (build 45156150)

Hardware Version: 1.9.1.10-2

Series ID: A100

IP Address: 192.168.1.3

Audio In: Dolby Digital 5.1

WM: 0

OTP:

---------------------------------

Play:1: Lounge (RS)

Serial Number: 78-28-CA-A8-ED-E4:2

Version: 9.1 (build 45156150)

Hardware Version: 1.20.1.6-2

Series ID: A200

IP Address: 192.168.1.4

WM: 0

---------------------------------

Play:1: Lounge (LS)

Serial Number: 78-28-CA-33-F2-EA:F

Version: 9.1 (build 45156150)

Hardware Version: 1.20.1.6-2

Series ID: A200

IP Address: 192.168.1.6

WM: 0

---------------------------------

Play:3: Master Bedroom

Serial Number: 00-0E-58-7D-B4-E2:7

Version: 9.1 (build 45156150)

Hardware Version: 1.8.1.2-2

Series ID: A100

IP Address: 192.168.1.23

WM: 0

OTP:





As you can see, neither of the Play 1's are showing WM:2, should they be, or has this changed, or is it because they are connected via the Bridge and using Sonos Net?
As you can see, neither of the Play 1's are showing WM:2, should they be, or has this changed, or is it because they are connected via the Bridge and using Sonos Net?

WM:2 is only applicable to home theatre surrounds/Sub if the system's in WiFi/Standard mode. You're in SonosNet mode, so WM:0 is correct.
Thanks Ratty



Only had the Play 1's since Saturday, wasn't sure if I'd done something wrong!



Next step, a Sub, just wish they still did the Matte Black one 😞
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