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IPmux-1/1E Installation and Operation Manual Chapter 4 Troubleshooting and Diagnostics
Diagnostic Tests 4-5
IPmux-1
ISDN S
Figure 4-4. IPmux-1E/BRI Internal Loop
➤
To run a loopback test:
• Press the <Spacebar> on your keyboard to toggle between the values:
Internal/External /Disable.
− Internal: Data received from the IP network side is looped back to the
network transmit line.
− External: Data received from the PBX at the receive ISDN S line is looped
back to the ISDN S Tx path (toward the same PBX). Data coming from the
IP network is ignored.
− Disable: No loopback. Regular operation.
Default value: Disable
FXS
Remote Loopback
You can set a remote loopback analog signal, per port, in IPmux-1E with FXS
interface. The analog signal is looped back towards the IP network.
Tone Injection
A 1 kHz tone, per port, is injected towards the local telephone set.
➤
To run a test:
• Press the <Spacebar> on your keyboard to toggle between the values:
Remote Loopback/Tone Injection/Disable.
Default value: Disable
Main Menu
↓
2. Configuration
↓
2. ISDN
Configuration
↓
3. Channel
Configuration
↓
1. Choose
Channel
↓
3. Loopback
State
Main Menu
↓
2. Configuration
↓
2. ISDN
Configuration
↓
3. Channel
Configuration
↓
1. Choose
Channel
↓
5. Testing
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