using Wifi smartphones as SIP clients

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Asterisk Users 13 Comments


has anyone any experience in using Wifi smartphones as SIP clients? Does
this work properly? What models/brands are optimal for this (in terms of
ease of use, battery life etc)?



13 thoughts on - using Wifi smartphones as SIP clients

  • Used the Snom M9 Wifi DECT phones, they work like charm.

    SIPDroid on Android phones work good too, however latency is going to be
    nightmare for u in softphone n wifi kinda scenario.

    Use good quality Access Points like Ruckus Wireless.


  • Hi,

    thx! The Snom M9 does not look like a Wifi phone however, nor is it a
    smarthpone. In order to use that I would have to use access points that
    can handle both Wifi and DECT. Astraa seems to have (an expensive) one.

    SIPDroid crossed my mind. You say they work OK but the latency is
    problematic? Is the experience as a whole then not poblematic?



  • Yeah well Snom M9 is a Wifi DECT Phone (it creates its own 2.4Ghz Frequency
    which is understood only between Base Station n M9 Units, It works just
    like your standard Chordless phones) difference being that the Base station
    is SIP enabled.

    SIP Droid is great to work with, it solves most of the issues.

    You should definitely give it a shot.

    Mitul Limbani,
    Chief Architech & Founder,
    Enterux Solutions Pvt. Ltd.
    110 Reena Complex, Opp. Nathani Steel,
    Vidyavihar (W), Mumbai – 400 086. India
    DID: +91-22-61447605
    Cell: +91-9820332422

  • Bart Coninckx writes:


    It works nicely for home use for power users who can accept the odd lost
    call and know how to restart the app or the phone when something goes
    wrong. Unfortunately I haven’t found anything so far which works for
    business use.

    The largest problem is that smartphones can’t afford (battery-wise) to
    check for wifi connectivity all the time. If the phone loses connection
    to the wifi, it often takes more than a minute before it is ready to
    receive calls again.

    iPhone, Android, and Symbian are about equally troublesome.


  • Benny,

    very useful, thank you.
    So, in short, at this stage it’s best to go DECT for wireless and if
    DECT and Wifi need to be combined (because both types of devices exist
    in the organization), it’s preferable to go to access points that offer
    both networks.




  • Well in that case, you might seriously want to look @ M9 they are cost
    effective n definitely work.

    Most of these cell phone type looking phones have a serious battery
    drainage problem.

    Smartphones really have a long way to understand how to preserve battery
    and deliver one thing (i.e. calls) very effectively, infact a Multi
    Function device (MFD) like smart phone has this issue.

    Mitul Limbani,
    Chief Architech & Founder,
    Enterux Solutions Pvt. Ltd.
    110 Reena Complex, Opp. Nathani Steel,
    Vidyavihar (W), Mumbai – 400 086. India
    DID: +91-22-61447605
    Cell: +91-9820332422

  • man, 07 05 2012 kl. 12:03 +0200, skrev Bart Coninckx:

    I don’t know that particular phone, but dedicated wifi phones definitely
    CAN work for professional use. E.g. ASCOM phones work absolutely great,
    they are just expensive.


  • The phone I pointed to is a WiFi phone, the M9 is a DECT phone.
    Different animal. The question is regarding using WiFi as the WiFi
    infrastructure is already in place.

    I understand smartphones is not a good option, but what about these WiFi
    SIP phones?



  • I’ve been using a UTStarcom GF-210 for the last year and more as my
    personal phone – dual-mode 2G GSM and SIP/802.11. Sound quality on SIP
    is slightly better than 2G, getting it to talk to Asterisk is no problem
    at all, but certainly if you’re moving from one wifi device to another
    you will get dropped calls. If that’s your use case, it’s going to be
    that way whatever hardware you use – I haven’t seen any implementations
    of 802.11F or 802.11r in the field.

  • Hope that these are better that the utstar F1000:
    Keep on re-chargibg as battery is empty in no-time, and security is
    lousy; just wep, no wpa.


  • WPA and WPA2. Battery lasts about a day in dual mode, much longer in
    2G-only of course. And at UKP30 they may be worth a punt even if you end
    up upgrading to something else.