4FXS1FXO (4-Port FXS + 1-Port FXO Voice Interface Card)
Card Overview
The 4FXS1FXO is a voice access module. It provides four FXS interfaces and one FXO interface that can connect to the PSTN and traditional telephone devices such as TDM PBXs, analog phones, and fax machines to transmit internal and external voice services.
A 4FXS1FXO card can be installed in a SIC slot of a router.
Figure 7-172 shows the appearance of a 4FXS1FXO card.
As shown in Figure 7-173, enterprise users use FXS interfaces to transmit voice services. The FXO interface is used to transmit voice services exchanged between enterprise users and external users.
FXS interfaces connect to analog phones, fax machines, and branch IP PBX to transmit voice services exchanged between enterprise branch users and between the enterprise headquarters and branch.
The FXO interface connects to the PSTN. The link of the FXO interface can function as the branch egress and best-effort link of the VoIP network to transmit voice services exchanged between enterprise users and external users and to implement link backup.
- Power outage survival: When the router (IP PBX) is powered off, all IP phones are unavailable. In this case, power outage survival is enabled. Then the router connects the FXO line to the first FXS interface to ensure nonstop service communication.
- BEST: When a fault occurs on the WAN-side IP network, BEST configured on the router ensures voice communication.
Version Mapping
Table 7-379 lists the device models and software versions supporting the 4FXS1FXO.
Functions and Features
Table 7-380 describes the functions and features of a 4FXS1FXO card.
Function and Feature |
Description |
|---|---|
Basic functions |
Connects to common analog phones, IP phones, fax machines, and TDM PBXs. |
Connects to the PSTN. |
|
Power outage survival |
Implements power outage survival and ensures nonstop service transmission when the enterprise egress transmission channel becomes faulty. |
BEST |
Ensures normal local voice communication in an enterprise if a WAN network failure occurs. |
Link backup |
Uses a PSTN network as a backup of the IP network to ensure reliable voice communication. |
Smooth upgrade to VoIP |
Implements the VoIP function on an enterprise's IP network by simply deploying 4FXS1FXO cards. This protects investments and facilitates expansion. |
Cost reduction |
Provides the VoIP function that allows users to make toll calls at a cost similar to local calls, significantly reducing communication fees. |
Extensive specialized services |
Provides specialized services such as call center, secretary, wake-up, blacklist and whitelist, three-party conference, and ONLY. These services make daily work more convenient, secure, and efficient. |
Diagnosis and maintenance |
Provides comprehensive diagnosis functions, including signal tracing, simulation, diagnostic testing, and remote collection of packet header information. |
Panel
Figure 7-174 shows the indicators on a 4FXS1FXO card, and Table 7-381 describes the indicator states and meanings.
Number |
Indicator |
Color |
Description |
|---|---|---|---|
1 |
STAT |
Green |
Slow blinking: The system is running properly. Fast blinking: The system is being powered on or restarting. |
Red |
Steady on: A fault that affects services has occurred and cannot be rectified automatically. The fault needs to be rectified manually. |
||
Off |
Off: The software is not running or is being reset. |
||
2 |
ACT (interface status indicator) |
Green |
Steady on: The FXO channel is being occupied by a call. |
Off: The FXO channel is idle. |
|||
3 |
ACT (interface status indicator) |
Green |
Steady on: The FXS channel is being occupied by a call. |
Off: The FXS channel is idle. |
Figure 7-175 shows the interfaces on a 4FXS1FXO card.
1. Four FXS interfaces (RJ11) |
2. One FXO interface (RJ11) |
FXS interface (RJ11)
FXO interface (RJ11)
Technical Specifications
Table 7-384 lists the technical specifications of a 4FXS1FXO card.
Item |
Specifications |
|---|---|
Card type |
SIC |
Hot swap |
Supported |
Physical specifications |
|
Environment parameters |
|
Ordering Information
To place an order, visit https://e.huawei.com/en/how-to-buy to find the local supplier or submit your inquiries online.
Table 7-385 provides 4FXS1FXO card ordering information.