International Engineering Consortium
Web ProForums
Home / On-Line Education / Web ProForums
Competitive Public Switched Telephone Network (PSTN) Wide-Area Network (WAN) Access Using Signaling System 7 (SS7)

Table of Contents:
Definition and Overview
1. Benefits of SS7
2. Current Network Issues
3. Switched WAN
4. WAN Access Issues for Service Providers
5. Getting CLECs and ISPs onto SS7–Based WANs
Self-Test
Glossary
Download PDFPDF of this tutorial
Self-Test
1. All but which of the following are characteristic of SS7?
a. reduces access costs for service providers
b. can service multiple trunks with one connection
c. requires CLECs to use the end switch office's local switching services
d. allows CLECs to receive reciprocal termination from the ILECs
2. All but which of the following statements are true of ISPs?
a. Their rapid wealth is made possible by low-cost Internet access products.
b. They operate according to outgoing dial-up calls.
c. They may provide service beyond a LATA.
d. Start-up and rural ISPs are provided low-cost access by analog loops.
e. They are rapidly increasing.
3. All but which of the following are true of adding costly switch capacity and trunk facilities to the network?
a. The end office is not so overburdened by voice traffic.
b. The ISP trunk ports may be freed for other services.
c. The ISP trunk ports may be freed for other local subscribers.
d. The cost infrastructure model is changed for the LEC in offering local service.
e. The problems caused by the expansion of ISP providers and customers are solved.
4. All but which of the following statements are true of the SS7–based WAN environment?
a. CLEC and ISP access charges are increased with SS7 and IOF facilities vs. PRI facilities.
b. CLECs can receive termination reciprocal end-office revenue from the ILEC.
c. CLECs have access to increased services such as AIN, LIDB, and other database services.
5. A CLEC must have a switch to provide local service.
a. true
b. false
6. CLECs/ISPs are motivated to connect to the WAN via SS7 despite increased call setup times.
a. true
b. false
7. Unless larger ISPs have multiple locations for access, all calls must come into the one central office serving the ISP.
a. true
b. false
8. ILECs do not have an established and deployed market, whereas the whole process of unbundled competitive service offerings has already been developed in many locations.
a. true
b. false
9. IOF trunks are required between the CLEC's switch and the ILEC's switch at the same central office.
a. true
b. false
10. ISPs entering the CLEC market face all but which of the following issues?
a. competition from other ISPs
b. competition from ILEC advanced offerings
c. access premiums for PRI service from service providers
d. the inability to offer PRI services in areas where only channelized services are available
e. the cost of measured service per minute
Glossary >>

Copyright © 2007 International Engineering Consortium
Terms of Use | Privacy Statement | Site Map
Registered Users
Enjoy exclusive access to free On-Line Education and receive the biweekly IEC newsletter.
IEC Newsletter
Get the latest industry information including critical insights from key industry leaders, technology briefings, and an Analyst Corner.
Current
Subscribe
Newsroom
IEC News
June 04, 2008
Top Broadband Innovations in Asia-Pacific Recognized with IEC Announcement of 2008 InfoVision Finalists
April 30, 2008
IEC and Convergence World Magazine Announce Top NGN Innovators at SOFNET 08 in London
April 22, 2008
Excellence, Innovation and Leadership Recognized as IEC and Convergence World Announce 2008 Awards Finalists
IEC on Radio
IEC on radio Tele-Semana, commentary on NXTComm 2007 and future IEC programming.
IEC on TV
CCTV Highlights Broadband World Forum Asia 2007
BBWF Asia Comes to China

View all Press Releases
On-line Press Kit
IEC Corporate Member
Advertising Kit
Overview
IEC.org Web Banner Ads
Event Web Banner Ads
E-Newsletters
Exhibit Preview
TecPreview