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Chapter 4 Troubleshooting and Diagnostics IPmux-1/1E Installation and Operation Manual
4-26 Diagnostic Tests
ISDN BRI
External Loop
An external loop on IPmux-1E can be set to test the ISDN “S’ line (Figure 4-7). The
test is performed on B channels only.
Figure 4-7. IPmux-1E/ISDN External Loop
Internal Loop
An internal loop on IPmux-1E can be set to test the ISDN “S’ line (Figure 4-8). The
test is performed on B channels only.
Figure 4-8. IPmux-1E/ISDN 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/FXO/E&M
Remote Loopback
You can set a remote loopback analog signal, per port, in IPmux-1E with
FXS/FXO/E&M 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. Analog
Configuration
↓
3. Channel
Configuration
↓
1. Choose
Channel
↓
5. Testing