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Hi,
I see a lot of guys are pitching here for Erlang table.

Here’s the link for Erlang table
http://www.karneyonline.com/technology/gsm/erlang1.htm

And in PDF format,
http://www.ittc.ukans.edu/EECS/EECS_663/ LOCAL/erlang-table.pdf

Hope this helps………….
Muzammil

Lets checked on this url:

http://www.itu.int/itudoc/itu-d/dept/psp/ssb/planitu/plandoc/erlangt.html

however it’s valid until 300 circuit only.

Nieta:

I’ve no idea on Erlang A. Erlang B is for systems w/o call queuing whilst Erlang C applies to systems with a queue for holding all requested calls not immediately assigned a channel.

Answer to 1 …4

1. Line signalling: represent the status of the line (hook on or hook off). Register signaling: represent the translation and storage of digits, for example digits dialled as tones from telephone are translate by a switch into digits to know where to route the call)

2. N ISDN:narrow band ISDN, it is to have over 1 single line two channel that allow to have at the same time two different calls. B ISDN: Broad Band ISDN, to increase bandwith over telephony to support multimedia

3. In band signalling that uses de same path and media to tranfer information, example R1, R2 for trunks. Outof band that siganling is over other media, example CC7 or SS7 for trunks.

4. E1 is 30 voice channel (Europe Standard), T1 is 24 Channesl (USA standard).

5. 6 apologize (not idea)

hello dears…

1.what is SDH ?

2.what is synchronization in e1 link?

3. e1 – 32 channal
|
0……..31
|
each is 8 bits
|
explain about this 8 bits stream of each channal.

if you have brief answer,
send me to
sarvamus@yahoo.com

I think that :

1-SDH stands for Synchronous Digital Hierarchy,it’s a standard of transmission where the unit is
STM-1 ( 155Mb).This standard is built over multimode fiber.It represents the evolution of PDH: plesiochronous…,based on G703 standard with the famous E1=2Mb.

2-Synchronisation, is the first TS 0 in the E1 wich shows to the system that the E1 frame starts from here.

if anyone can help me in “Trafic théorie and Erlang formula” they could send to “amaidizohra@yahoo.fr”
Great thanks

1.what CDMA ?
I need brief explanation.

Those who knows this pls