Patton electronic 4520 Application-Analog line extension over IP, Application-ITSP dial-in access

2 • Applications overview Model 4520 & 4110 Series Getting Started Guide

Application—Analog line extension over IP

A virtual analog line can be created using an FXO and FXS model (see figure 9). The complete signaling and media (voice, fax, or modem) of the analog phone line is extended over IP. This enables a PBX analog extension line to be extended to a home office or satellite office. The analog line extension relays DTMF, hook-flash and CLI to provide full PBX feature access over the IP network (checking voice mail or joining a calling group, for example).

											Router
											GatewayDevice
											VoIP Access
											Integrated
										4524
								SmartNode
										ToIP
									0/2	0/3
								0/1
						Activity	0/0
				Link	100M
			Activity
Link	Link	100M
VoIP
Power Run

											Router
											GatewayDevice
											VoIP Access
											Integrated
										4524
								SmartNode
										ToIP
									0/2	0/3
								0/1
						Activity	0/0
				Link	100M
			Activity
Link	Link	100M
VoIP
Power Run

											Router
											GatewayDevice
											VoIP Access
											Integrated
										4524
								SmartNode
										ToIP
									0/2	0/3
						Activity	0/0	0/1
				Link	100M
			Activity
Link	Link	100M
VoIP
Power Run

Figure 9. Analog line extension

Application—ITSP dial-in access

An ITSP can use the SmartNode FXO gateways as dial-in access points to his Internet telephony services (see figure 10). A user calls a local number, the FXO SmartNode picks up the call and uses a second dial-tone to dial the remote number. The system can be enhanced with a central call control server providing IVR announcements, PIN checking, and accounting for the calls.

											Router
											GatewayDevice
											VoIP Access
											Integrated
										4524
								SmartNode
										ToIP
									0/2	0/3
						Activity	0/0	0/1
				Link	100M
			Activity
Link	Link	100M
VoIP
Power Run

											Router
											GatewayDevice
											VoIP Access
											Integrated
										4524
								SmartNode
										ToIP
									0/2	0/3
						Activity	0/0	0/1
				Link	100M
			Activity
Link	Link	100M
VoIP
Power Run

Figure 10. ITSP dial-in access

28 Applications for SmartNode 4110 Series