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<div>You can use the location update timestamp in the HLR. The MS will RACH periodically based on the value of the T3212 timer. This is configurable to multiples of 6 minutes with 6 being the minimum. If a phone hasn't updates it's location after that interval
has passed you can assume it's not connected <br>
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-------- Original Message --------<br>
From: robert <robert.steve07@gmail.com><br>
Date: Wed, Jun 21, 2017, 12:32 PM<br>
To: Neels Hofmeyr <nhofmeyr@sysmocom.de><br>
CC: OpenBSC Mailing List <openbsc@lists.osmocom.org><br>
Subject: Re: knowing connected subscribers<br>
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On Jun 21, 2017, at 1:44 AM, Neels Hofmeyr <nhofmeyr@sysmocom.de> wrote:<br>
<br>
> On Tue, Jun 20, 2017 at 02:11:25PM +0300, robert wrote:<br>
>> Hello,<br>
>> <br>
>> Is there a way in openBSC to know if a certain phone that previously connected to my BTS is still connected at a given time ?<br>
> <br>
> In OpenBSC not really, the subscription status is typically in the MSC and/or<br>
> HLR; so if you're using OsmoNITB you can query the subscriber's LAC on the VTY,<br>
> or use the CTRL command 'subscriber-list-active-v1’.<br>
<br>
I am using OsmoNITB. Does the command ’subscriber-list-active-v1’ list the phones that are currently connected or should they be active (for example during a call) ?<br>
> <br>
> If you're using OpenBSC alone, there's no way AFAIK. It only sees a subscriber<br>
> when it is actually actively sending/receiving right at this moment.<br>
> <br>
> ~N<br>
> <br>
<br>
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