Specifications

Installation and Operation Manual Chapter 6 Troubleshooting and Diagnostics
IPmux-8/16 Ver. 6.00 Frequently Asked Questions 6-31
 All other alarms sent from the near-end TDM device (including information
on timeslot 0), will be propagated transparently by the local IPmux, to the
remote end TDM device (over the IP connection).
Framed mode:
In case of LOS/LOF/AIS detected on the local IPmux side, a user-configurable
conditioning pattern (00 to FF) will be sent on the relevant timeslots (over the IP
connection), to the far-end TDM device. A user-configurable conditioning
pattern can also be applied on the ABCD bits (CAS signaling 1 to F) going
towards the remote PBX.
The frame synch on the E1/T1 level is maintained in favor of the end TDM
devices.
Ethernet Side Alarms:
Unframed mode:
In case of local failure on the IPmux, or a situation of jitter buffer
underflow/overflow, an (unframed) AIS will be sent towards the near-end TDM
side
Framed mode:
In case of local failure on the IPmux, or situation of jitter buffer
underflow/overflow, a conditioning pattern (00 to FF) will be sent towards the
near-end TDM device on the timeslots related to that specific bundle. A user-
configurable conditioning pattern can also be applied on the ABCD bits (CAS
signaling 1 to F), going towards the local TDM device.
In this case the synch on the E1/T1 level is maintained in favor of the TDM end
devices.
Q: How can I ensure the IPmux TDMoIP traffic priority over an IP
Ethernet network?
A: The IPmux family is equipped with three different features that can be
implemented in order to give the IPmux TDMoIP traffic priority over an
IP/Ethernet network:
 VLAN ID (Layer 2)
 ToS field (Layer 3)
 UDP destination port (Layer 4).
Each QoS feature is based on a different OSI level and can be used individually
in order to ensure the TDMoIP traffic priority. When determining which feature
to use, it is important to verify that the different elements on the network,
(switches / routers etc.), support the selected priority mechanism and are also
configured to give the highest priority to the labeled IPmux traffic.
Notice that the priority is given to the TDMoIP traffic by the network elements
and the IPmux is merely tagging the packets.
VLAN ID
The IPmux complies with standards IEEE 802.1p&Q. This enables the user to
set both VLAN ID and VLAN Priority. It adds four bytes to the MAC layer (Layer
2) of the Ethernet frame. These bytes contain information about the VLAN ID,
and the VLAN priority, which runs from 0-7. The IPmux only tags the packets,