The CTP+ exam covers specific facts you need to know related to telephony signaling and troubleshooting. In addition to the information covered in the rest of the book, you should understand the topics addressed in this appendix, including:
• Signaling protocols
• Fax and modem communications
• Convergence devices and multimedia
When you need to connect to a telephone outside of your switch, and certainly when you need to connect to one outside of your region, the public switched telephone network (PSTN) uses the Signaling System 7 (SS7) switching standard that was developed in 1981 by the ITU-T, formerly known as the CCITT. SS7 is an out-of-band ...