RAD Data comm IPmux-11 - Manual (Page 117)

Installation and Operation Manual Chapter 6 Troubleshooting and Diagnostics
IPmux-11 Ver. 2.00 Testing IPmux-11 6-19
Activating T1 Inband Loopbacks
T1 physical loopbacks can be activated by receiving a loopback activation code
from TDM equipment connected to the T1 port. When IPmux-11 receives a
loopback activation code, it closes an external loopback (see
Figure 6-14 ), or
translates the TDM-based loopback activation code into the packet-based pattern
and sends it to the opposite IPmux device, which closes an internal loopback
(see
Figure 6-15 ).
The inband loopback can be activated only if the OAM connectivity is enabled
and only one bundle is configured for each port of the device.
An inband loopback is deactivated automatically, if:
• TDM connection is down
• Ethernet connection is down
• The user activated an internal or external loopback manually.
Figure 6-14. T1 Inband Loopback Performed by Local IPmux-11
Figure 6-15. T1 Inband Loopback Performed by Remote IPmux-11
To activate an inband loopback:
• From the Inband Loop Detection menu (Diagnostics > Loopback > Inband
Loop Detection), perform the following:
Select Loop Location and set it as follows:
Local System (External loopback is activated in the local IPmux-11)
Remote System (Internal loopback is activated in the remote IPmux-11)
Disable (IPmux-11 ignores inband activation code).