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GPRS: access point name

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Tue, 10/27/2009 - 07:53
#1
bvsarathi
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Joined: 10/26/2009
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GPRS: access point name

Hi ,
can anyone tell me wht is access point name.
and wht are its valid values?

Edited by admin on 05/16/2010 - 04:32
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Tue, 10/27/2009 - 09:01
#2
Loveknowledge
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Joined: 10/25/2009
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Re: GPRS: access point name

bvsarathi wrote:
Hi ,
can anyone tell me wht is access point name.
and wht are its valid values?

Hi Sarathi; Access point name or APN as somehow evident from its name is the "service that a user is allowed to have/enjoy"....Like if an operator wants to provide MMS service to its users it will generally create an access point name as "MMS or XYZMMS" which points to the service MMS. One other thing is that in GPRS network GGSN is the one that is communicating with outside world(mean with internet,wap , mms ,other services) and SGSN is the one that is communicating with the user on access side. There can be many GGSNs in a network with only 1 SGSN. Lets say GGSN1 serves MMS service and GGSn2 serves Internet service. So when a subsctiber is trying to send MMS, the APN name "MMS or XYZMMS" will be resolved by a DNS server in the operator network(internal DNS) and after resolotion it will tell SGSN that MMS service is provided by GGSN1(Actually DNS will resolve the APN into the GGSN IP serving for that service)..same is appplicable for every service.
I hope this is clear. In future there will be a single APN for all the services whether it be MMS,wap or internet etc...

Anyone with other views is pls welcome as the aim is to provide the correct info :)

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Tue, 10/27/2009 - 09:08
#3
bvsarathi
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Re: GPRS: access point name

Hi mr Love knowlegde,

thanks for the information. actually  i need to derive the network identifier and operator identifier  from the apn i have got.when i saw in wiki pedia i saw it that the apn will be like A.B.C.D.
the first string is network identifier and the remaining part is operator identifier.
but i have got an apn like "blackberry.net" or it is coming as "portalnmms".so from this how could i derive the NI & OI.

Thanks in advance.

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Tue, 10/27/2009 - 09:49
#4
Loveknowledge
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Re: GPRS: access point name

Hi, If you see the Create PDP message in trace, in Ethereal or wireshark, Under the GPRS tunnelling Protocol(if you expand this field),You will have a sub-field "Routing Area Identity" If you will expand this , you can find the Network Identities from where the request for PDP activation is coming, You will see the values of MCC,MNC,LAC & RAC there. So even if the operators have APN universally like "Blackberry.net" you will know from the trace that this request is coming from which Operator network(roaming partner). For your internal traffic for sure MCC,MNC will be of your network.

Is this what you wanted to ask ?...Pls let me know ..if you wanted something else.

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Sat, 07/17/2010 - 09:39
#5
sanju
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Joined: 07/17/2010
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Re: GGSN INTERNET PROTOCOL

HI Professionals,

What is GGSN INTERNET PROTOCOL, will anybody give me some information about this.

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