3ComメーカーS200の使用説明書/サービス説明書
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3Com ® Corporation PathBuilder ™ S200 Series Switch V oice Over IP.
Notice © 1998 3Com Corpor ation 5400 B ayfro nt Plaz a Santa Cl ara, CA 95052 -8145 (408) 32 6-5000 All rights reserved. Printed in U.S.A. Portions reprinted with th e permission of Motoro la, Inc. Restricted Rights Notificat ion for U.S. Go vernment Users The software (including firmware) addr essed in thi s m a nu al is provided to the U.
Notice (contin ued) Proprietar y Material Information and soft ware in th is document are propriet ary to 3Com (or its Suppliers) and without t he express prior per mission o f an of ficer of 3Com, ma.
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V oice Over IP 1 V oice Over IP Overview Introducti on This document desc ribes the V oice Over I P (V oIP) feat ure for 3Com’ s Pa thBuilder S200 series swit ch Prod ucts. Note Parameter s and appl ications for voice traf fic are d iscussed in the manual.
2 V oice Over IP About V oice over IP (V oIP) About V oice over IP (V oIP) What is V oIP ? PathBuil der S200 series s witch p roducts s upport V oice ove r IP (V oIP) to provide terminat ion an d encapsul ation of voice a nd fax tra f fic for transpor t over an IP network ( see to Fig ure 1).
V oice Over IP 3 T0008-48 /B Re visi on 5.2 About V oice over IP (Vo IP) Network T opology Introduct ion This sec tion describes a typical network topology for the a pplication of V oIP . Network T opology Figure 2 illustrat es a typi cal network topol ogy for voi ce tr aff i c.
4 V oice Over IP About V oice over IP (V oIP) SoTCP Operation Introducti on This sect ion describes t he operat ion of SoTCP pr otocol. SoTCP provid es the encapsula tion metho d for carrying v oice traf fic over an IP network.
V oice Over IP 5 T0008-48 /B Re visi on 5.2 About V oice over IP (Vo IP) Establishing a Call Introduct ion This sect ion descr ibes call establishment s. Figure 4 shows the packets exchanged fo r session and connecti on esta blishme nt and finally , voice t ransfer .
6 V oice Over IP About V oice over IP (V oIP) Establishing a Session Befor e voice traf fi c c an pass be tween th e voice po rt s over t he networ k, th e source IP must est ablish a TCP and UDP session with t he des tinatio n IP node .
V oice Over IP 7 T0008-48 /B Re visi on 5.2 About V oice over IP (Vo IP) Data T ransfer The SoTCP prot ocol a ttaches the 3 or 4- byte header to t he packet.
8 V oice Over IP V oIP Applic ations V oIP Applica tions Introduct ion This sect ion desc ri bes typical applic ations of V oIP and the benefits of imple me nti ng voice ove r an IP network. Applications V oIP ca n be used to provid e cost eff ecti ve, long dis t ance phone serv ices over the IP network.
V oice Over IP 9 T0008-48 /B Re visi on 5.2 V oIP Applic ations Example V oIP Configuration Introduct ion This sec tion shows an exampl e of how to c onfigure V oIP .
10 V oice Over IP V oIP Applic ations Configurati on Figure 9 shows the pa rameters c onfigured for e ach Pat hBuilder S2 00 series switch. Figure 9. Configurable Parameters to suppor t V oIP V oice P.
V oice Over IP 11 T0008-48 /B Re visi on 5.2 Configuring V oIP Configuring V oIP Introduct ion These sec tions describe how to confi gure the V oIP option. The parame ters for the V oIP optio n are s pecifie d in three re cords: • “SoTCP Parameters ” on page 12.
12 V oice Over IP Configuring V oIP SoTCP Parame ters Navigating the CTP Figure 10 shows the CTP p ath to th e SoTCP specific par a meters. Figure 10. SoTCP Parameters SoTCP Parameter Descriptions The.
V oice Over IP 13 T0008-48 /B Re visi on 5.2 Configuring V oIP Maximum Number of TCP Sessions Range 1 to 40 Default 1 Descript ion Specifie s the maximum number of TCP sessi ons allowed throu gh SoTCP . Once the maximum number is reac hed, no mor e session s will be es tablishe d and the “SoTCP-N o more TCP sessi ons” alarm will be ge nerated.
14 V oice Over IP Configuring V oIP Serial Connecti on Establishment T imeout Ran ge 1 to 200. Spec ified in 50 m s inc re men ts. Default 100 Descript ion Specif ies the t ime SoTCP wa its fo r connec tion es tabli shment wi th the seri al device.
V oice Over IP 15 T0008-48 /B Re visi on 5.2 Configuring V oIP Route Selection T able Parameters Parameters The se Route Sel ection T abl e par ameters sho uld be c onfigure d: Note A table b oot is required for changes t o thes e parame ters to tak e af fect.
16 V oice Over IP Configuring V oIP SoTCP Map T able P arameters Navigating the CTP Figure 11 s hows the CTP path to the So TCP map paramete rs. Figure 1 1.
V oice Over IP 17 T0008-48 /B Re visi on 5.2 Configuring V oIP Parameters The se SoTCP map ta ble par ameters s hould be con figured: Note A node b oot is re quired for ch anges to t hese parame ters to take af fect.
18 V oice Over IP Statis tics Statistics Introduct ion This section de scribes the st atistics ava ilable for the SoTCP option. T ypes of Statisti cs Y ou can genera te th ese st atisti cs: • SoTCP st atist ics • Detaile d SoTCP statistic s Navigating the CTP Figure 12 shows the CTP p ath to th e SoTCP statistic s.
V oice Over IP 19 T0008-48 /B Re visi on 5.2 Statistic s SoTCP St atist ics Example Figur e 13 shows t he SoTCP stat istics screen . Figure 13. SoTCP Statist ics Description Thi s table descri bes the s creen attribu tes shown i n Figure 13.
20 V oice Over IP Statis tics SoTCP Detailed Stat istics Example Figur e 14 shows t he detail ed SoTCP statisti cs scr een. Figure 14. SoTCP Detailed Stati stics Description Thi s table descri bes the s creen attribu tes shown i n Figure 14.
V oice Over IP 21 T0008-48 /B Re visi on 5.2 Statistic s Status Specif ies the current state of the ses sion. Status messages i nclude : • Start •I d l e •W a i t H d r • W ait Da ta • Abort The values mentioned apply t o connecti on status.
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T echnical Support A-1 Appendix A T echnical Support 3Com prov ides easy access to techni cal s upport in formation throug h a variety of serv ices. This appendix desc ribes the se services. Info rmat io n cont ained in this appe ndix is correct a t time of publicati on.
A-2 T echnical Supp ort 3Com Bulletin Board Service The 3Com BBS cont ains patc hes, sof tware, and drivers for 3Com produ cts. This servic e is avail able th rough analog modem or di gital modem (ISDN) 24 hours a day , 7 days a we ek.
T echnical Support A-3 If you are unable to contact y our n etwork su pplier , see the following sec tion on how to conta ct 3Com. Support from 3Com If you ar e unabl e to obta in ass istan ce from the 3Com onli ne techni cal re sources o r from your network suppli er , 3Com off ers technical telephone support servic es.
A-4 T echnical Supp ort Retur ning Products for Repair Before y ou send a produc t dir ectly t o 3C om for repai r , you must firs t obt ain a Return Materials Au thorizat ion (RMA) number . Products se nt to 3Com wit hout RMA numbers will be r eturn ed to the s ender unopened, at the sender ’ s expense.
Index Index-1 Numerics 3Com bull etin boa rd service (3Com BBS) A-2 3Com URL A-1 3ComFacts A- 2 A applica tions 2 , 8 B bullet in board service A-2 C call es tablishment 5 configu ration exam ple 9 pa.
デバイス3Com S200の購入後に（又は購入する前であっても）重要なポイントは、説明書をよく読むことです。その単純な理由はいくつかあります：
3Com S200をまだ購入していないなら、この製品の基本情報を理解する良い機会です。まずは上にある説明書の最初のページをご覧ください。そこには3Com S200の技術情報の概要が記載されているはずです。デバイスがあなたのニーズを満たすかどうかは、ここで確認しましょう。3Com S200の取扱説明書の次のページをよく読むことにより、製品の全機能やその取り扱いに関する情報を知ることができます。3Com S200で得られた情報は、きっとあなたの購入の決断を手助けしてくれることでしょう。
3Com S200を既にお持ちだが、まだ読んでいない場合は、上記の理由によりそれを行うべきです。そうすることにより機能を適切に使用しているか、又は3Com S200の不適切な取り扱いによりその寿命を短くする危険を犯していないかどうかを知ることができます。
ですが、ユーザガイドが果たす重要な役割の一つは、3Com S200に関する問題の解決を支援することです。そこにはほとんどの場合、トラブルシューティング、すなわち3Com S200デバイスで最もよく起こりうる故障・不良とそれらの対処法についてのアドバイスを見つけることができるはずです。たとえ問題を解決できなかった場合でも、説明書にはカスタマー・サービスセンター又は最寄りのサービスセンターへの問い合わせ先等、次の対処法についての指示があるはずです。
