Agilent Technologies 37907A Bedienungsanleitung PDF herunterladen (Seite 10)

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Key ATM Features and Functionality

The software provides the following powerful ATM features and

functions:

• Handles ATM testing rates from 1.5 Mb/s to 622 Mb/s; ATM Interfaces

including T1/E1, J2, E3/T3, STM- 1/OC- 3, STM- 1e/ EC- 3, STM- 4/OC- 12,

ATM25 (25.6 Mb/s UTP- 3/5) and UTP155 are available as plug- in

modules or undercradles

• Auto- discovers up to 1024 Virtual Channels on all ATM interfaces

• Analyses protocols including full rate capture with capture and display

filtering and searching (e.g. set the capture filter to capture only ATM

streams carrying IP traffic with specific IP addresses)

• Monitors, captures data, and decodes upper and lower layer protocols

in real time

• Decodes and logs statistics for LAN encapsulated protocols over ATM,

including Voice over IP decodes: H.323 series, IETF series (SIP, MGCP,

SGCP, MEGACO), ITU- T T.38

• Finds Errors in capture file or buffer

• Decodes AAL- 1, AAL- 2, AAL- 3/4, AAL- 5

• AAL 5 CRC Statistics

• Decodes Frame Relay over ATM

• Decodes ATM UNI, NNI (B- ISUP, B- ICI) and PNNI signaling

• Decodes IMA Control Protocol (ICP) cells

• Real- time and post- processing User Assisted LAN over ATM

• Emulates ATM UNI signaling -- check call set- up procedures

• Emulates ELAN Join (LANE)

• Generates user- defined cell traffic from a cell table

• Retransmits captured traffic which has been copied and pasted to the

cell table, modified (e.g. VPI- VCI and/or embedded IP addresses

changed); the HEC and AAL- 5 CRC- 32 are automatically recalculated

• Generates ATM ICMP Echo (PING)

• Generates and analyses OAM cells

• Tests ATM QoS performance to the ITU- T O.191 standard -- measures

cell loss, cell delay, cell delay variation, cell mis- insertion and cell

errors

• Generates ATM traffic shaped to traffic contracts

• Polices ATM traffic to traffic contracts

• Tests simultaneously with other technologies (e.g. SS7, GSM, CDMA,

• GPRS, Ethernet)

• Measures optical power

Line Vital Statistics

ATM Line Vital Statistics saves valuable time automating the

troubleshooting process. The Vitals application provides a quick view of

overall ATM network health. From Vitals you can drill down to pinpoint

a specific problem.

Values in the Vitals display are given in tabular form and are cumulative

from the start of the test, except the instantaneous utilization, which is

also displayed in graphical format for a quick view of overall usage of

the network. Vitals data include such statistics as average utilization in

percent, instantaneous utilization in percent, total cells, idle cells, busy

cells, header (‘‘HEC’’) errors, code violations and frame alignment errors.

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