Skip to main content
shibumi
Avid Contributor III
July 19, 2016
Answered

Is the figure behind "WM: " significant?

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?
    This topic has been closed for further comments. You can use the search bar to find a similar topic, or create a new one by clicking Create Topic at the top of the page.
    The LHCAnswer
    July 19, 2016
    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.
    View in thread

    15 replies

    The LHCAnswer
    July 19, 2016
    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.
      biffta
      biffta
      Headliner I
      July 19, 2016
      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.
      John B
      July 19, 2016
      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.
      ratty
      ratty
      July 19, 2016
      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.
      shibumiAuthor
      Avid Contributor III
      July 20, 2016
      @ratty: may I know what "STP" mean?
      ratty
      ratty
      July 20, 2016
      Spanning Tree Protocol
        biffta
        biffta
        Headliner I
        July 20, 2016
        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.
        John B
        July 20, 2016
        Because the OP does not have SonosNet active. You do. Please see @ratty's explanation earlier in this thread.
        CAW
        Collaborator II
        July 20, 2016
        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.)
        biffta
        biffta
        Headliner I
        July 20, 2016
        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.
        :?
        Show more replies
        Terms & ConditionsAccessibility statement