Comments for Tech FAQ http://www.wapopia.com/techfaq Things related to Telecom, Networks and Linux Tue, 07 Feb 2012 06:23:46 +0000 http://wordpress.org/?v=2.3.1 Comment on How many E1 in one STM 1 by D http://www.wapopia.com/techfaq/gsm-faq/how-many-e1s-can-be-accommodated-in-one-stm-1/#comment-3862 D Sat, 24 Dec 2011 18:17:51 +0000 http://www.wapopia.com/techfaq/gsm-faq/how-many-e1s-can-be-accommodated-in-one-stm-1/#comment-3862 There are total 64 E-1's in one STM-1 card, from which 1 is used as header and remaining 63 are world wide known, Higher levels go up by a factor of 4 at a time: the other currently supported levels are STM-4, STM-16, STM-64 and STM-256. Beyond this we have wavelength-division multiplexing (WDM) commonly used in submarine cabling. Hope you all got your answers. There are total 64 E-1’s in one STM-1 card,
from which
1 is used as header
and remaining 63 are world wide known,

Higher levels go up by a factor of 4 at a time: the other currently supported levels are STM-4, STM-16, STM-64 and STM-256. Beyond this we have wavelength-division multiplexing (WDM) commonly used in submarine cabling.

Hope you all got your answers.

]]> Comment on How many E1 in one STM 1 by Richard M. http://www.wapopia.com/techfaq/gsm-faq/how-many-e1s-can-be-accommodated-in-one-stm-1/#comment-3544 Richard M. Sun, 27 Nov 2011 11:30:16 +0000 http://www.wapopia.com/techfaq/gsm-faq/how-many-e1s-can-be-accommodated-in-one-stm-1/#comment-3544 Calculation of number of E1 in an STMN frame are not the result of the simple division of total STM capacity into E1 capacity, because you need to remove ALL the different headers (MSOH, RSOH, POH) and pointers... that's what makes SDH so different from PDH, the additional data you put into the frame so that it can be extracted without decomposing the whole frame, but just taking the E1 that you need. In summary: STM1 = 63 E1s STM4 = 4x63 E1s STM16 = 16x63 E1s... and so on. Good day. Calculation of number of E1 in an STMN frame are not the result of the simple division of total STM capacity into E1 capacity, because you need to remove ALL the different headers (MSOH, RSOH, POH) and pointers… that’s what makes SDH so different from PDH, the additional data you put into the frame so that it can be extracted without decomposing the whole frame, but just taking the E1 that you need.
In summary:
STM1 = 63 E1s
STM4 = 4×63 E1s
STM16 = 16×63 E1s… and so on.
Good day.

]]> Comment on What is Initial Address Message IAM ? by jihane http://www.wapopia.com/techfaq/gsm-faq/what-is-initial-address-message-iam/#comment-2978 jihane Tue, 20 Sep 2011 15:36:02 +0000 http://www.wapopia.com/techfaq/gsm-faq/what-is-initial-address-message-iam/#comment-2978 salame kirakoume dayrine salame kirakoume dayrine

]]> Comment on RTP Dynamic Payload and Static Payload by Luis http://www.wapopia.com/techfaq/ims-faq/rtp-dynamic-payload-and-static-payload/#comment-2476 Luis Tue, 28 Jun 2011 09:10:28 +0000 http://www.wapopia.com/techfaq/ims-faq/rtp-dynamic-payload-and-static-payload/#comment-2476 mean* :) mean* :)

]]> Comment on RTP Dynamic Payload and Static Payload by Luis http://www.wapopia.com/techfaq/ims-faq/rtp-dynamic-payload-and-static-payload/#comment-2475 Luis Tue, 28 Jun 2011 09:06:35 +0000 http://www.wapopia.com/techfaq/ims-faq/rtp-dynamic-payload-and-static-payload/#comment-2475 "m=video 47232 RTP/AVP 8" don't you me audio? “m=video 47232 RTP/AVP 8″ don’t you me audio?

]]> Comment on What is EIR Equipment Identity Register ? by Sharkitz http://www.wapopia.com/techfaq/gsm-faq/what-is-eir-equipment-identity-register/#comment-1862 Sharkitz Mon, 21 Mar 2011 00:06:45 +0000 http://www.wapopia.com/techfaq/gsm-faq/what-is-eir-equipment-identity-register/#comment-1862 Mobile communication has paved its way in the late 90s and I urge relevant authorities especially those in the Pacific regions to enact a syllabus into their respective universities so that people could get skills and knowledge about mobile communications. Regards, Sharkitz (675 72751276) Mobile communication has paved its way in the late 90s and I urge relevant authorities especially those in the Pacific regions to enact a syllabus into their respective universities so that people could get skills and knowledge about mobile communications.

Regards, Sharkitz (675 72751276)

]]> Comment on How many E1 in one STM 1 by izhar kazmi http://www.wapopia.com/techfaq/gsm-faq/how-many-e1s-can-be-accommodated-in-one-stm-1/#comment-1851 izhar kazmi Sat, 19 Mar 2011 07:29:57 +0000 http://www.wapopia.com/techfaq/gsm-faq/how-many-e1s-can-be-accommodated-in-one-stm-1/#comment-1851 i agree with mr. farhad his answer in correct. i agree with mr. farhad
his answer in correct.

]]> Comment on Mobile Visitor Location Register VLR function ? by mukesh sharma http://www.wapopia.com/techfaq/gsm-faq/mobile-visitor-location-register-vlr-function/#comment-1721 mukesh sharma Sun, 20 Feb 2011 10:13:56 +0000 http://www.wapopia.com/techfaq/gsm-faq/mobile-visitor-location-register-vlr-function/#comment-1721 i want someone mobile user location i want someone mobile user location

]]> Comment on why we are not able to make more then 16 slc in a low speed link.? by Nawal http://www.wapopia.com/techfaq/gsm-faq/why-we-are-not-able-to-make-more-then-16-slc-in-a-low-speed-link/#comment-1453 Nawal Sun, 23 Jan 2011 06:54:14 +0000 http://www.wapopia.com/techfaq/gsm-faq/why-we-are-not-able-to-make-more-then-16-slc-in-a-low-speed-link/#comment-1453 SLS is of 4 bit in SCCP part which can have value from 0 to 15 only and this is where bottleneck lies related to number of links can be configured. SLS is of 4 bit in SCCP part which can have value from 0 to 15 only and this is where bottleneck lies related to number of links can be configured.

]]> Comment on Mobile Switching center MSC by Abubaker http://www.wapopia.com/techfaq/gsm-faq/mobile-switching-center-msc/#comment-1214 Abubaker Wed, 29 Dec 2010 13:03:18 +0000 http://www.wapopia.com/techfaq/gsm-faq/mobile-switching-center-msc/#comment-1214 Hi every body Hi every body

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