Recognizing cell phones


#1

hi,

i’m just wondering how asterisk recognizes cell phones. ie, if for example i have two cell phones, one as [A] and the other one as [B]. I place them both in front of the PBX and start asterisk. how does it recognize which one i wanted to name A and which one i wanted to name B?

thank you in advance,


#2

I don’t believe that Asterisk is even aware that there is a cellphone in front of it.


#3

i forgot to mention i’m usign openbts with a PBX

when i use [imsixxxxxx] it works, but when i change the name to any other than the imsi, asterisk says: “no matching peer found for host:127.0.0.1:5062”

i’ve just tried writing host above mentioned in sip.conf and it worked although don’t know why the port in sip show peers is 5060?

what could the error be? should i always name them with their imsi?

thank you in advance,


#4

That’s a rather specialist question. I’m pretty sure it would be illegal to run such a system in the UK. I think you need to ask the OpenBTS people.

However, in the original GSM design, one would be using a TMSI. I guess, if you run your own base station, you might be able to force the phone to identify with an IMSI, but that rather breaks the GSM model with respect to privacy.


#5

thank you very much for your answer. one more question: the command secret, a) is this the password i have to enter when making a call or sending sms? or b) is it the password when the phone registers to the network?

if it’s b), there’s no password required to register for the netwrok. i cannot try a) yet since i’m using only one cell phone.

thnkas in advance,


#6

quick question… what hardware do use as bts ? something from ericsson & co or someting a bit fancy ?


#7

usrp1 from ettus