Mobile P_REV_6 and 9

Discussion in 'Motorola Droid X' started by baniels, Aug 6, 2010.

  1. baniels

    baniels Member

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    I posted this on the Droid X forum but I didn't get any answers. Perhaps some folks here can chime in.

    I am wondering if anyone knows the difference between P_Rev_6 and P_Rev_9.

    In the Mobile P_Rev section of the programming menu there are several options. P_Rev_6 is selected, there are a few lower-numbered options and one higher --- P_Rev_9.

    Does anyone know anything about Mobile P Rev and perhaps what the difference is between the options?
     
  2. Corinacakes

    Corinacakes Super Moderator
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    :shocked: Dude! I have NO IDEA what you're talking about but here's a :bump: for you!
     
  3. titans

    titans Premium Member
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    Yeah same here no clue :icon_eek:
     
  4. baniels

    baniels Member

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    I'm sure you guys are familiar with the ##PROGRAM menu. This is one of the sections of that menu.
     
  5. Backnblack

    Backnblack Premium Member
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    Never have needed to use the Program Menu
     
  6. Corinacakes

    Corinacakes Super Moderator
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  7. baniels

    baniels Member

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    Hmm. Not quite, but thank you for devoting your time to my question.

    That part of the hidden menu is for adjusting the Voice codec rate. It was using that method when setting up my X that got me poking around in the menu again.

    I think the full name for Mobile P_REV is Mobile Protocol Revision. It is not a widely discussed topic.

     
  8. SStratman

    SStratman Member

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    I'm also curious about this! as I was helping out my gf with setting her DroidX to EVRC-B in that menu and was checking for any differences between hers and my Droid1 and also noticed this P_REV 9 option that my Droid1 doesnt even have as a choice...
     
  9. mechaman2

    mechaman2 New Member

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    P_REV=1 was developed under an ANSI standards process with documentation reference J-STD-008. J-STD-008, published in 1995, was only defined for the then-new North American PCS band (Band Class 1, 1900 MHz). The term IS-95 properly refers to P_REV=1, developed under the Telecommunications Industry Association (TIA) standards process, for the North American cellular band (Band Class 0, 800 MHz) under roughly the same time frame. IS-95 offered interoperation (including handoff) with the analog cellular network. For digital operation, IS-95 and J-STD-008 have most technical details in common. The immature style and structure of both documents are highly reflective of the "standardizing" of Qualcomm's internal project.

    P_REV=2 is termed Interim Standard 95A (IS-95A). IS-95A was developed for Band Class 0 only, as in incremental improvement over IS-95 in the TIA standards process.

    P_REV=3 is termed Technical Services Bulletin 74 (TSB-74). TSB-74 was the next incremental improvement over IS-95A in the TIA standards process.

    P_REV=4 is termed Interim Standard 95B (IS-95B) Phase I, and P_REV=5 is termed Interim Standard 95B (IS-95B) Phase II. The IS-95B standards track provided for a merging of the TIA and ANSI standards tracks under the TIA, and was the first document that provided for interoperation of IS-95 mobile handsets in both band classes (dual-band operation). PREV=4 was by far the most popular variant of IS-95, with P_REV=5 only seeing minimal uptake in South Korea.

    P_REV=6 and beyond fall under the CDMA2000 umbrella. Besides technical improvements, the IS-2000 documents are much more mature in terms of layout and content. They also provide backwards-compatibility to IS-95.


    Now someone else can translate what each revision does or does not do.dancedroid
     
  10. B.Wallace85

    B.Wallace85 Member

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    I have a slight headache from reading this thread. LOL. I hope you find what you're looking for though.
     
  11. sidbaxter

    sidbaxter New Member

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    I'm curious, too. I switched my X to p_rev 9 a few days ago, and haven't seen any noticeable changes in the phone's behavior. Will post here again if that changes.
     
  12. Technoman

    Technoman Member

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    Perhaps P_Rev=9 is related to the changes that Verizon is working on to allow you to use Data and voice at the same time... or maybe even something to do with LTE.
     
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