- This topic has 23 replies, 1 voice, and was last updated 6 years, 7 months ago by Wallis Dudhnath.
13th May 2011 at 07:18 #42091SURESHGuest
Dear Garry,I am a research scholor working in the area of GSM networks. How to calculate the call setup time for a GSM network.16th May 2013 at 09:13 #42092UsmanGuest
For bigger and complex GSM networks, average time is 5.5 to 7 secs.10th December 2013 at 08:10 #42093gyanaGuest
we have rehomed some BSC From one SGSN to another new SGSN. and found call setup time increased while subsciber is in GPRS active mode in that SGSN.MT voice call is happening through Gs interface.
Kindly advice23rd April 2015 at 04:57 #42094priyaGuest
how to get the call setup time for different networks like gps,gprs,umts. and there is any techniques to minimise the call setup time ?20th November 2016 at 04:42 #42095SudhirGuest
Call setup time calculation in tems logfile22nd January 2017 at 08:38 #42096kranthiGuest
can any one provide the standard & standard specification where i can get GSM call flow in detail & time allowed by the standard ( 3GPP OR ETSI ) . Need in standard specification ( ETSI xxxx OR 3GPP xxxx) that has to use some where in my organisation9th April 2017 at 12:49 #42097AyatGuest
in core level we enable identity request for MO , MT , and SMS MO ,SMS M and it cause delay in Call setup to we planing to disable it , do you think it will effect collecting IMEI in Our network
with existing EIR ,,any bad impact
as i know it is an optional and usually vendor like Huawei disable this message for service , keep it only on LOC9th April 2017 at 16:51 #42098pixGuest
IMEI authentication may not be mandatory (in your country), so you could by-pass it. The only drawback is the lesser security when setting up calls, and the inability to know the handset model from a call trace.
Regarding security, there is probably a good reason to keep the IMEI check, but I’m not familiar with this aspect of things. If I were you, I would bring up the topic to security experts.
Regarding tracing, it depends if you’re using massive probing servers such as Astellia. Showing the IMEI information for each call is a great way to isolate problematic handset models.
Finally, if your government or a private company tests your network and finds out that it is less protected that your competitors, it may
(1) play against you when they have to choose which operator to subscribe to.
(2) may be bad publicity.
The IMEI phase is not taking up so much time I think… It’s a phase which is run in parallel to other phases, which means it doesn’t “block” the call setup process (afaik). I wonder how much time you’d gain by removing it.
BR/Pix10th April 2017 at 07:29 #42099Wallis DudhnathGuest
As highlighted compared to other GSM nodes, the EIR is not mandatory. Several GSM Networks were launched without an EIR.
To reduce on SCCP signalling messages (e.g. CheckIMEI()) the MSC/VLRs can be configured so that a query to the EIR will not be required for every call, i.e. the query requests can be reduced.
VBR/ Wallis Dudhnath
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