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  1. #1
    Registered User
    Join Date
    Mar 2004
    Posts
    11

    J2ME + SIP = need for a public IP

    Hello,

    I'm currently playing around a little bit with the possibilities of SIP on J2ME-enabled phones.
    Unfortunately, SIP doesn't work very well on my mobile phone, because it only gets a private IP-adress from my provider (via UMTS and GPRS). As far as i know, SIP only works properly if 2 hosts with a public IP-address communicate (or maybe if the NAT-Gateway supports SIP).
    So, I'm looking for a method to assign a public IP adress to my mobile phone in order to be able to test my SIP-Applications on it.
    I had the following ideas until now:
    - Bluetooth-Connection between the phone and my PC; The phone uses bluetooth instead of GPRS/UMTS to access the internet. Are there any mobile phones which would be suitable for this? Maybe with a pocketPC?
    - VPN connection between my phone and a server which assigns a public IP to the phone.

    Are there any other possibilities to solve this problem? The main requirement is, that the J2ME-application on my mobile device is able to access the internet using a public ip.

    Thanks for your help in advance!

    tom

  2. #2
    Registered User
    Join Date
    Mar 2003
    Posts
    4,105
    Some networks give public IPs on request. Ask your provider.

  3. #3
    Registered User
    Join Date
    May 2007
    Location
    Chennai
    Posts
    15

    Re: J2ME + SIP = need for a public IP

    hello,

    i got the same problem.. how to set public id to my mobile. can u plz explain me how to implement SIP VoIP in J2ME

    Quote Originally Posted by oe3vsfm4 View Post
    Hello,

    I'm currently playing around a little bit with the possibilities of SIP on J2ME-enabled phones.
    Unfortunately, SIP doesn't work very well on my mobile phone, because it only gets a private IP-adress from my provider (via UMTS and GPRS). As far as i know, SIP only works properly if 2 hosts with a public IP-address communicate (or maybe if the NAT-Gateway supports SIP).
    So, I'm looking for a method to assign a public IP adress to my mobile phone in order to be able to test my SIP-Applications on it.
    I had the following ideas until now:
    - Bluetooth-Connection between the phone and my PC; The phone uses bluetooth instead of GPRS/UMTS to access the internet. Are there any mobile phones which would be suitable for this? Maybe with a pocketPC?
    - VPN connection between my phone and a server which assigns a public IP to the phone.

    Are there any other possibilities to solve this problem? The main requirement is, that the J2ME-application on my mobile device is able to access the internet using a public ip.

    Thanks for your help in advance!

    tom

  4. #4
    Registered User
    Join Date
    Dec 2008
    Posts
    7

    Red face Re: J2ME + SIP = need for a public IP

    Hey even i am looking for this can anyone tell me how to get the public ip for my device.



    regards,
    venky.
    (venkyatu@gmail.com)

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