Figure 2. Extending E3/T3 Circuits over IP/Ethernet
• Assigned, IANA-registered UDP
socket number for TDMoIP
simplifies flow classification
through switches and routers.
OPERATION MODES
• Two types of service are offered:
Unframed: Full E1/T1 or E3/T3
circuits are transparently
extended across the IP network,
regardless of framing structure.
Structured: IPmux-16 can be
configured on a per timeslot
basis for fractional E1/T1 services
over IP networks. CAS signaling
is supported.
• Multibundling (grouping timeslots
originating from a specific E1 or
T1 port) can be performed for up
to 31 bundles per E1 port and
24 bundles per T1 port for
transport over the network. Both
mesh and star topologies are
supported.
• IPmux-16 allows internal
cross-connect of bundles between
its E1 or T1 ports.
TIMING
• IPmux-16 maintains
synchronization between TDM
devices by deploying advanced
clock distribution mechanisms.
The clocking options are:
Internal: The IPmux-16 clock’s
internal oscillator provides the
master clock source for the TDM
circuit.
Loopback: The transmit clock is
derived from the respective
port’s receive clock.
Adaptive: The clock is
recovered from the Ethernet
network interface.
External: The station clock port
is available and may be used to
synchronize E1/T1 interfaces.
ETHERNET MODULE
• Two Ethernet modules can be
installed in the IPmux-16 chassis,
providing the uplink to the packet
network.
• Each module supports a single
10/100BaseT or 100BaseFx port.
• IPmux-M/ETH/UTP,
IPmux-M/ETH/MM-LC, and
IPmux-M/ETH/SM-LC support
re-ordering when packets arrive
from the network in the wrong
order, without considering them
as lost packets.
• Ethernet link redundancy to the
network is supported when
IPmux-16 is equipped with two
Ethernet modules (see Figure 5).
E1 AND T1 MODULES
• Each E1 or T1 module provides
either four or eight standard E1 or
T1 interfaces, which enable
connectivity to any standard E1 or
T1 device (see Ordering).
Integral LTU/CSU can be
enabled for line protection and
long haul applications.
Alarm detection and insertion
are supported together with
error statistics. SES/UAS statistics,
LOS/AIS physical layer alarms
and remote loop/local loop test
modes are all supported.
Standard E1/T1 alarms are
supported end-to-end.
E3 AND T3 MODULES
• Each E3 or T3 module provides a
single, standard E3 or T3 interface.
• Alarm detection and insertion are
supported together with error
statistics. SES/UAS statistics,
LOS/AIS physical layer alarms and
remote loop/local loop test modes
are all supported. Standard E3 or
T3 alarms are supported
end-to-end.
POWER SUPPLY
• The IPmux-16 modular power
supply supports carrier
environments. The maximum
power supplied by one unit is
75W with maximum power
consumption of 57W.
• IPmux-16 features hot-swappable
power supplies, enabling service
to a power supply (see Figure 4
and Figure 5).
DIAGNOSTICS & MANAGEMENT
• IPmux-16 supports remote loop
and local loop testing.
End-to-end alarm generation and
end-to-end AIS indication are also
provided. In the event that a local
E1/T1 port receives AIS, it is
passed to the remote port via the
Ethernet/IP network. If a local
Ethernet port is not connected, an
AIS indication will be generated
both in the local and the remote
devices.
• On the E1/T1 or E3/T3 ports, SES
and UAS statistics are collected in
15-minute intervals and are stored
for 24 hours (96 intervals). E1/T1
physical layer alarms (LOS, AIS,
LOF, LCV) are also supported.
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