2BST-W (2-Port ISDN S/T Voice Interface Card - WSIC)
Card Overview
The 2BST-W is a voice service module for a router and can connect to an Integrated Services Digital Network (ISDN) network to enable voice communication between enterprise users and external ISDN users.
A 2BST-W card can be installed in a WSIC slot of a router.
Figure 7-169 shows the appearance of a 2BST-W card.
Version Mapping
Table 7-373 lists the device models and software versions supporting the 2BST-W.
Functions and Features
Table 7-374 describes the functions and features of a 2BST-W card.
Function and Feature |
Description |
|---|---|
Basic function |
Works in network termination (NT) mode to support voice services. |
Connects to an ISDN network. |
|
Branch Exchange for Survivable Telephony (BEST) |
Ensures normal local voice communication in an enterprise if a WAN network failure occurs. |
Link backup |
Uses an ISDN network as a backup of the VoIP network to ensure reliable voice communication. |
Smooth upgrade to VoIP |
An enterprise can implement the VoIP function on its IP network by simply deploying 2BST-W cards. Use of the 2BST-W cards protects previous investment of the enterprise and enables a convenient network upgrade. |
Cost reduction |
Provides the VoIP function that allows users to make toll calls at a cost similar to local calls, significantly reducing communication fees. |
Diagnosis |
Provides comprehensive diagnosis functions, including signal tracing, simulation, diagnostic testing, and remote collection of packet header information. |
Panel
Figure 7-170 shows the indicators on a 2BST-W card, and Table 7-375 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 |
The system software is not running or is resetting. |
||
2 |
ACT (interface status indicator) |
Green |
Steady on: The ISDN channel is active. |
Off: The ISDN channel is inactive. |
|||
3 |
B1/B2 |
Green |
Blinking: The ISDN B1/B2 channel is being occupied. |
Off: The ISDN B1/B2 channel is idle. |
Figure 7-171 shows the interfaces on a 2BST-W card.
1. Two ISDN S/T interfaces |
ISDN S/T interface
Technical Specifications
Table 7-377 lists the technical specifications of a 2BST-W card.
Item |
Specification |
|---|---|
Card type |
WSIC |
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 7-378 provides 2BST-W card ordering information.