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Configuring and Managing T1 Digital Line Cards
309
Figure 128
ISDN PRI Span List Dialog Box
5
From the
CO Switch Protocol
pull-down list, select
AT&T Custom - 4ESS
.
6
Click
OK
to enable the 4ESS protocol and exit from the dialog box.
Otherwise click
Apply
to enable 4ESS, stay in the
Modify Span
dialog box,
and configure Call-By-Call Service. See “Configuring Call-By-Call Service”
in the next section.
Configuring Call-By-Call Service
You order the optional Call-By-Call Service from your long-distance
carrier, only if you order the 4ESS protocol. 3Com does not support
Call-By-Call Service with any other protocol.
To configure Call-By-Call Service:
1
In the
Modify Span
dialog box, click the
Enable Call-By-Call Service
check
box.
2
In the
Carrier Identification Code
text box, type the identification code for
your long-distance carrier.
Your long-distance carrier can supply this code at the time that you order
PRI services, or you can ask the carrier for their code number. Another
way to obtain the code is to access the web site for the North American
Number Plan Administration (http://www.nanpa.com). In the menu in the
left frame, expand Number Assignments, and click
Carrier Identification
Codes
. Follow the instructions to download and unzip the two files
Содержание NBX 100
Страница 14: ......
Страница 18: ...18 ABOUT THIS GUIDE ...
Страница 26: ...26 CHAPTER 1 INTRODUCTION ...
Страница 138: ...138 CHAPTER 2 DIAL PLAN ...
Страница 322: ...322 CHAPTER 3 DEVICE CONFIGURATION ...
Страница 328: ...328 CHAPTER 4 USER CONFIGURATION ...
Страница 412: ...412 CHAPTER 10 TROUBLESHOOTING ...
Страница 458: ...458 APPENDIX B ISDN COMPLETION CAUSE CODES ...
Страница 480: ...480 GLOSSARY ...
Страница 492: ...492 INDEX ...