Patton electronic SmartNode 4110 Series ユーザーズマニュアル

Introduction

SmartWare Software Configuration Guide 

This chapter provides an overview of POTS signaling and SmartNode FXS ports and describes the tasks 
involved in configuring FXS ports in SmartWare. 

This chapter includes the following sections:

•

Shutdown and enable FXS ports (see 

)

•

Bind FXS ports to higher layer protocols (see 

•

Configure country specific FXS port parameters (see 

•

Configure other FXS port parameters (see 

)

•

Select a low-bit-rate codec for FXS ports

•

Example

FXS stands for foreign exchange station and is the exchange side of a POTS (plain old telephone system) line. Even 
though POTS is seen as old technology it still plays an important part in today's telecommunications networks. 
There are still a large number of analog phone sets in use worldwide and will do so in the future. These analog 
devices, be they phones, facsimile machines and the like, represent a large investment and it is desirable to have 
the technical means to hook such devices to a Voice over IP enabled network. POTS signaling.

The signaling procedure used on FXS ports is different throughout different countries, but the basic idea is to 
use the POTS line itself as a current loop which signals off-hook and on-hook of the handset. Going off-hook 
establishes a connection between the phone and whatever is on the other side (CO switch, SmartNode, etc.). 

FXS ports are enabled by default. They also can be configured when they are active. But keep in mind that con-
figuration of an active port temporarily disables the port for a short time (some milliseconds).

Mode: Context CS

Enter FXS port configuration mode

Shutdown the port. All active calls are dropped!

Activate the port.