TDM Pseudowire Access Gateway
IPmu
-11
TDMoIP QoS
• IPmux-11 supports VLAN tagging
and priority labeling according to
802.1p&Q. TDMoIP packets are
assigned a dedicated VLAN ID
and 802.1p bit.
• The ToS or Diffserv of the
outgoing TDMoIP packets are
user-configurable. This allows the
TDMoIP packets to be given a
higher priority in IP networks.
• EXP bits are used for QoS marking
of the TDMoMPLS traffic in MPLS
networks.
TDMoIP TIMING
• Synchronization between TDM
devices is maintained, by
deploying advanced clock
distribution mechanisms. The
clocking options are:
Internal – the master clock
source for the TDM circuit is
provided by IPmux-11’s internal
clock oscillator
Loopback – the transmit clock is
derived from the E1/T1 port’s
receive clock
Adaptive – the clock is
recovered from the PSN
External – an external clock
source to synchronize the device
via its station clock port.
• System clock ensures clock
resilience by using master and
fallback timing sources for clock
redundancy. IPmux-11 also
provides system clock output via
external clock connector.
TDM INTERFACE
• One standard E1 or T1 port
provides connectivity to any
standard E1 or T1 device.
• E1 and T1 interfaces support the
following:
Integral LTU/CSU for long haul
applications
G.703 unframed and G.704
framed modes
CAS and CRC-4 bit generation
(E1)
D4/SF and ESF framing (T1)
Robbed bit (T1).
ETHERNET INTERFACE
• IPmux-11 provides the following
Ethernet ports:
One network port (UTP or fiber
optic)
Two user ports (both UTP or
UTP and fiber optic).
• Each Ethernet port supports:
Port-based rate limiting for
bandwidth control
Port-based VLAN membership
for ingress traffic restriction
Port-based VLAN tagging
Double VLAN tagging (VLAN
stacking)
Bridging and filtering.
ETHERNET CAPABILITIES
• IPmux-11’s internal Layer-2
Ethernet switch provides three
Ethernet ports. One port serves as
a network interface and the other
two serve for user Ethernet traffic.
• Each Ethernet port supports:
Configurable port-based rate
limiting for bandwidth control
Configurable port-based VLAN
membership for ingress traffic
restriction
Configurable port-based VLAN
tagging; a VLAN tag is added
resulting in a double tagging
(VLAN stacking) when an
already tagged frame is
switched.
• The device supports standard IP
features, such as ICMP (ping),
ARP, next hop and default
gateway.
Figure 1. LAN and TDM Services over a Fiber Optic Ethernet Link
APPLICATIONS
(148 pagine)
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