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| |-+  ANSI-41 (CDMA & TDMA) Related (Moderator: SMS Forum Support)
| | |-+  Scope and trend for ANSI-41 based Mobile core networks??
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Author Topic: Scope and trend for ANSI-41 based Mobile core networks??  (Read 565 times)
qazmlp
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« on: October 10, 2006, 16:06:33 UTC »

I would like to do some market analysis on the scope and the usage of
ANSI-41 based Mobile core networks(HLR, MSC/VLR, GMSC etc.) in the
North America.

Does anybody have an idea about how many of the operators in the North
America use ANSI-41 and how many using GSM MAP based mobile core
networks? Are there any recent articles covering this? Also, what is
the predicted future trend for the ANSI-41 networks in the North
America? Will the customers continue using it, or are there signs for
moving towards the GSM MAP based network?
Any inputs related to the scope and the usage of ANSI-41 and GSM-MAP
based networks will be of immense help.
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RussCrush
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« Reply #1 on: October 11, 2006, 01:54:08 UTC »

Here is what I know......

 The ANSI 41 signaling ain't going anywhere real soon. While ETSI is the standard in the world,  the entire North American continent is built on ANSI from the start.

 The GSM model is already accepted as the MAP standard in the ANSI spec. All GSM providers use the GSM MAP spec, and more CDMA and IDN providers are supporting it, but use ANSI labels in the MTP and SCCP labels.

 Bear in mind that the ETSI standard was based on the ANSI standard, and devised to allow adjacent countries to signal successfully, but in North America, that scheme is not really needed, being one big country. The conversion from ANSI to ETSI is done at the shoreline, and it works well, so why dump zillions of Euros to change it?

 I surmise that VOIP, SIP and (Insert the name of the SS7 protocol replacement that I cannot recall!!) will leave ANSI (and probably ETSI) to perish in the end.
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qazmlp
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« Reply #2 on: October 11, 2006, 15:26:30 UTC »

In the meantime, I could get this article where they have quoted a positive trend towards using GSM in the North American countries:
http://www.betanews.com/article/GSM_Expands_Lead_in_Americas/1157052101
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shad
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« Reply #3 on: October 11, 2006, 20:25:48 UTC »

I doubt you would find any CDMA2000 operators running GSM MAP, or GSM operators using ANSI-41. So the use of either of these MAP protocols is associated with the air interface. There are of course some operators who have decided to change air interface types, with the associated MAP change.

(I think there is a standard for "GSM 1X", CDMA2000-1X air interface and GSM MAP backend, but I don't know that anyone is actually using it).

The CDG website has information on operators using CDMA, which would make up the bulk of the ANSI-41 operators. There are a dwindling number of AMPS & TDMA networks which also use ANSI-41.

Smiley
shad
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