- This topic has 9 replies, 1 voice, and was last updated 16 years, 2 months ago by Mohammad Yasin.
1st November 2004 at 12:07 #40087RayGuest
Does anyone know how to activate LAPD traffic report in BSC (logical file name LAPDFROCA). Thanks.2nd November 2004 at 15:29 #40088JessyGuest
I got some write up on NOKIA LAPD measurement. Pls. allow me to send you the doc.2nd November 2004 at 15:40 #40089RayGuest
Hi Jessy thanks for your reply, my email add. is email@example.com. Thanks in advance.2nd November 2004 at 22:41 #40090LizGuest
count me in too. email –> firstname.lastname@example.org. Thanks.4th November 2004 at 19:07 #40091Mohammad YasinGuest
Please count me too for the document y email- email@example.com November 2004 at 23:09 #40092MiguelGuest
please count me too, thanks —> firstname.lastname@example.org November 2004 at 15:34 #40093OliverGuest
I’ve seen Nokia LAPD counter from BSS part and they can tell you bytes TX and RX but this is a real-time counter which is updated every half hour by default. There are no way to store this information.
Oliver14th November 2004 at 06:13 #40094alexanderGuest
Please, give me the command to see LAPD measurement. I know only couple of command to see measuremnt on bsc, ZOLT and ZTPI. Wich commands you know to interrogate LAPD measuremnt?
http://www.dx200.biz12th December 2004 at 11:21 #40095JessyGuest
Sorry I’d been away for sometime. In case those didn’t receive the doc, here’s the info.
LAPD traffic report (221/DDH)
The logical output file for the ASCII report is the LAPDFROCA and the LAPDFROCB for the binary report.
An example of a LAPD traffic report:
DX 200 MSCLAB 1998-08-01 19:31:34
D-CHANNEL MEASUREMENT REPORT PART 3, LAST PART
TRANSMITTED AND RECEIVED FRAMES AND OCTETS ON D-CHANNEL
START : 1998.08.01 18:00:00
END : 1998.08.01 19:30:00
D-CHANNEL : 28 TYPE : PRI
I FRAMES : 162 162
UI FRAMES : 0 0
I FRAME OCTETS : 5022 5022
UI FRAME OCTETS : 0 0
TOTAL OCTET COUNT : 14742 14742
END OF LAST PART
END OF REPORT
The availability report on the signalling links includes the following measurement data on the D-channels that are measured:
The number of the D-channel.
The type of D-channel ( PRI = primary / SEC = secondary ).
·TRANSMITTED FRAMES / OCTETS
The number of sent frames and octets (0…4294967295). Every I-frame and UI frame is listed separately, as opposed to the total number of octets.
·RECEIVED FRAMES / OCTETS
The number of received frames and octets (0…4294967295). Every I-frame and UI frame is listed separately, as opposed to the total number of octets.
Signalling link load
There are statistical counters that collect information of MTP signalling link availability, performance and utilization. Utilization counters can be used for finding out signalling link loads. The used command are OLU and OLT.
With measurements 3.1 and 3.2 (transmitted SIF+SIO octets), 3.3 (transmitted MSUs), 3.4 (received SIF+SIO octets) and 3.5 (received MSUs) the average link occupancy can be calculated. Measurement periods are 5 and 30 minutes. Samples of 30 minutes periods should be read especially during the busy hour.
Measurement values can be read with the OLU command and signalling link load in Erlangs can be read with the OLT command.
Example 7: Displaying signalling link load
With the OLT command you can display the signalling link load during last measurement period (5 min or 30 min).
The following command displays the signalling link load of signalling links 1 to 5 in active unit during last 5 minutes period.
The output could be the following:
DX 200 SP240 1999-05-19 09:59:50
SIGNALLING LINK LOAD
METERS OF LAST PERIOD: 09:50:00 – 09:55:00 ( 5 MIN)
LINK ERLANGS ERLANGS
==== ========== ===========
1 0.157 0.152
2 0.000 0.000
3 0.134 0.130
4 0.199 0.199
5 0.105 0.132
Example 8: Calculating the signalling link load
Table 64. “Formula for signalling link calculation (outgoing signalling).”
The sum of counters 3.1 and 3.2 during 30 minutes period is 2.880.000 octets. Counter 3.3 is 144.000 (number of transmitted MSUs). Link capacity is 8192 octets/sec. MTP level 2 overhead should be noted in calculations. Overhead is 6 octets per MSU (F+CK+LI+FSN+BSN).
Level 2 overhead:
6 octets * 144.000 = 864.000 octets
Sent info in link:
2.880.000 + 864.000 = 3.744.000 octets
3.744.000 / 30*60 = 2080 octets/sec.
2080 / 8000 = 0.26 Erl.
Table 65. “Formula for signalling link calculation (incoming signalling).”
Recommended link occupancy is 0.2 Erlangs (specified in the ETSI 300 008 specifications). If the occupancy is higher, it is time to consider adding a new link.12th December 2004 at 16:07 #40096Mohammad YasinGuest
THANKS FOR YOUR DOCUMENT
HI ALEX HOW ARE YOU FOR LAPD MEASUREMENT YOU CAN TRY –ZDMF
STAY IN TOUCH