TDM IPmux-24 Datasheet

Data Sheet

IPmux-24

TDM Pseudowire Access Gateway

TDM circuit emulation
over packet-switched
networks

• Comprehensive support for pseudowire/circuit emulation standards including

TDMoIP, CESoPSN, SAToP, CESoETH and HDLCoPSN

• Industry-leading adaptive clock recovery mechanism suitable for cellular

backhaul over packet-based networks

• Carrier-class/environmentally hardened devic e

• Extensive OAM and performance monitoring capabilities

• Three auto-detecting Gigabit or Fast Ethernet SFP- or UTP-based ports, and

one, two or four TDM service ports

IPmux®-24 provides legacy services over
packet networks. The device converts the
data stream from its user E1/T1 ports into
packets for transmission over the
network. These packets are transmitted
via the IPmux 24 Ethernet network port to
the PSN. A remote pseudowire device
converts the packets back to their original
format.

PSEUDOWIRE FUNCTIONALITY

The ASIC-based architecture provides a
robust and high performance pseudowire
solution with minimal processing delay.

The Access Company

IPmux-24

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TDM Pseudowire Access Gatewa

The unit employs various pseudowire
encapsulation methods, including TDMoIP,
CESoPSN, SAToP, CESoETH (MEF 8) and
HDLCoPSN.

Proper balance between PSN throughput
and delay is achieved via configurable
packet size.

A jitter buffer compensates for packet
delay variation (jitter) of up to 180 msec
in the network.

PSEUDOWIRE QoS/CoS

Ethernet networks – outgoing pseudowire
packets are assigned a dedicated VLAN ID
according to 802.1q and marked for
priority using 802.1P bits.

IP networks – outgoing pseudowire
packets are marked for priority using
DSCP, ToS, or Diffserv bits.

MPLS networks – outgoing pseudowire
packets are assigned to a specific MPLS
tunnel and marked for priority using EXP bits.

PSEUDOWIRE TIMING

End-to-end synchronization between
circuits is maintained by deploying
advanced clock recovery mechanisms.

Clock recovery conforms to G.823 and
G.824 traffic interface using
G.8261-defined scenarios.

Advanced clock recovery conforms to
G.823 synchronization interface using
G.8261-defined scenarios and achieves
16 ppb clock accuracy.

The system clock ensures a single clock
source for all TDM links. The system clock
uses master and fallback timing sources
for clock redundancy. IPmux-24 also
provides system clock input and output via
an optional external clock port.

TDM INTERFACE

One, two or four E1 or T1 ports provide
connectivity to any standard E1 or T1
device.

The E1 and T1 interfaces feature:

• Integral LTU/CSU for long haul
applications

• G.703 and G.704 framing modes

• CAS and CRC-4 bit generation (E1)

• D4/SF and ESF framing (T1)

• Robbed bit (T1).

Figure 1. 2G/3G Cellular Backhaul

Data Sheet

ETHERNET INTERFACE

The following Ethernet ports are available:

• One network port

• One network/user port

• One user port.

The Ethernet ports accept a wide range of
Gigabit and Fast Ethernet SFP-based fiber
optic and electric, as well as built-in UTP
interfaces.

The unit can also be ordered with Fast
Ethernet interfaces only (IPmux-24/FE).

ETHERNET CAPABILITIES

IPmux-24 features an internal bridge,
operating in VLAN-aware and
VLAN-unaware modes.

VLAN stacking is used for traffic
separation between different users or
services, by defining a service provider
VLAN ID per customer or service. When
VLAN stacking is used, a service provider
VLAN tag is added to the user traffic and
removed from network traffic. Both
service provider VLAN ID and service
provider VLAN priority can be defined.

IPmux-24 provides four priority queues for
each port or pseudowire traffic flow. User
traffic can be prioritized according to
VLAN priority, DSCP, IP Precedence or per
port.

Ingress and egress rate can be limited per
user and network port. Rate limitation is
configured per packet type.

ETHERNET RING TOPOLOGIES

A G.8032 Layer-2 Ethernet ring is used by
IPmux-24 for traffic protection. This
technology builds a logical ring, defined as
a set of IEEE 802.1-compliant bridges, and
protects against link and node failures. To
achieve this, every node in the ring has
two bridge ports connected to adjacent
nodes. The ring itself is constructed
independently of the transport technology
used at the server layer. Failures in the
ring are detected by using Ethernet OA M
(Y.1731) continuity check (CC) messages
between adjacent nodes.

In addition, the unit employs Resilient
Ethernet Ring technology to construct a
self-healing Ethernet fiber ring topology
(ring resiliency is similar to that of
SDH/SONET networks). In case of link
failure on any segment of the ring, the
pseudowire traffic is rerouted within
50 ms. A single ring supports up to
16 nodes.

ETHERNET LINK PROTECTION

The unit performs link aggregation (LAG)
based on 802.3ad requirements.

Dual homing technology (1:1) allows
IPmux-24 to be connected to two
different upstream devices.

PSEUDOWIRE TRAFFIC PROTECTION

Pseudowire traffic can be backed up at
the pseudowire connection level. This
allows setting a different path for the
primary and secondary PW bundles. Both
bundles can be routed to the same or
different destinations and operate in the
1+1 and 1:1 modes.
In 1:1 redundancy with two remote
devices the PW bundles in the remote
units operate in “mate” mode. In this
mode each device monitors traffic on a
mate bundle and transfers data only when
the other bundle is inactive.

Figure 2. Private or Leased Line over PSN

IPmux-24

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TDM Pseudowire Access Gatewa

Preserves investment
in legacy equipment in
migration to PSN

ETHERNET SERVICE OAM (802.1ag)

The unit uses the end-to-end Ethernet­layer OAM protocol for proactive
connectivity monitoring, fault verification,
and fault isolation, according to the IEEE

802.1ag and ITU-T Y.1731 requirements.

LINK OAM (IEEE 802.3ah)

Link-layer OAM according to IEEE 802.3ah
is used for fault indication and loopback
activation response.

MANAGEMENT

IPmux-24 can be configured and
monitored locally via an ASCII terminal, or
remotely via Telnet/SSH, Web browser or
RADview.

Management traffic can run over a
dedicated VLAN.

The RADview Service Center and Element
Manager packages control and monitor
pseudowire devices and circuits. The
Service Center’s intuitive GUI, “point and­click” functionality and easy-to-follow
wizards increase the efficiency and
accuracy of the service provisioning
process.

IPmux-24 performs RADIUS client
authentication. Using SSH and SSL
encryption protocols allows secure
communication over potentially insecure
IP-based networks.

The Syslog protocol is used by IPmux-24
to generate and transport event
notification messages over IP networks to
the central Syslog server. The Syslog
operation is compliant with the RFC 3164
requirements.

SNMPv3 support introduces a user-based
security model, enhances authentication
and encryption techniques, and ensures
management traffic security.

Each management and service host has a
separate MAC address. As the unit
provides one default gateway, the user
can also specify static routes to enhance
the IP routing capabilities of the
management and pseudowire traffic.

Software is downloaded via the local
terminal, using XMODEM, or remotely,
using TFTP. After downloading a new
software version, IPmux-24 automatically
saves the previous version in non-volatile
memory for backup purposes. Similarly,
copies of the configuration file may be
downloaded and uploaded to a remote
workstation for backup and restore
purposes.

OAM AND DIAGNOSTICS

The following RFC-2495 E1/T1 physical
layer performance statistics are available:
LOS, LOF, LCV, RAI, AIS, FEBE, BES, DM, ES,
SES, UAS and LOMF.

IPmux-24 performs an internal built-in test
(BIT) after power-up. The results of the
test are visible via the local terminal.

LAN and IP layer network condition
statistics, such as packet loss and packet
delay variation (jitter) are monitored and
stored by the device.

Fault isolation, statistics and event logging
are available.

Fault propagation initiates service port
alarms, e.g. E1/T1 LOS, to reflect network
fault conditions. Alarms detected at
service ports are propagated to the
remote pseudowire device via the packet
network.

Data Sheet

Diagnostic loopbacks can be activated
inband.

Ethernet and IP-layer network condition
statistics, such as packet sequence errors
(loss or misorder) and packet delay
variation (jitter), are monitored and stored
by the device.

RAD’s TDM PW OAM mechanism verifies
connectivity, measures round trip delay
and prevents pseudowire configuration
mismatch.

The carrier-class version of IPmux-24
includes an alarm relay mechanism. The
minor and major alarms are forwarded to
a remote alarm device via dedicated pins
of the external clock RJ-45 connector.

SIMPLE NETWORK TIME PROTOCOL

IPmux-24 employs Simple Network Time
Protocol (SNTP) for propagating and
receiving time information on a network,
according to SNTPv4 (RFC 4330)
requirements. SNTP is used to configure
data and time by learning the information
from a single or multiple NTP servers. The
clock can be configured to a local time by
defining UTC and DST offsets.

ENVIRONMENT

IPmux-24/H is an environmentally hardened
version intended for street-cabinet and
cellular-tower installations.

Notes: The /H version requires temperature
hardened SFP transceivers.

Figure 3. Delivering Ethernet and TDM Services over Fiber Ring in the First Mile

IPmux-24

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TDM Pseudowire Access Gatewa

Lowers Opex of TDM
service by utilizing
packet infrastructure

Specifications

E1 INTERFACE

Number of Ports

1, 2 or 4

Compliance

ITU-T Rec. G.703, G.704, G.706, G.732,
G.823

Data Rate

2.048 Mbps

Line Code

HDB3

Framing

Unframed, framed, multiframe; with or
without CRC-4

Signaling

CAS, CCS (transparent)

Line Impedance

120Ω, balanced
75Ω, unbalanced

Signal Levels

Receive:

0 to -36 dB with LTU (long haul)

0 to -10 dB without LTU (short haul)
Transmit balanced: ±3V ±10%
Transmit unbalanced: ±2.37V ±10%

Jitter and Wander Performance

Per AT&T TR-62411, ITU-T G.824 (for
internal, loopback and external clock
modes)

Connector

Balanced: RJ-45
Unbalanced: BNC (RJ-45 to BNC adapter

cable is supplied)

T1 INTERFACE

Number of Ports

1, 2 or 4

Compliance

ANSI T1.403, ITU-T Rec. G.703, G.704,
G.824

Data Rate

1.544 Mbps

Line Code

B8ZS, B7ZS, AMI

Framing

Unframed, SF, ESF

Signaling

CAS (bit robbing), CCS (transparent)

Line Impedance

100Ω, balanced

Signal Levels

Receive: 0 to -36 dB
Transmit pulse amplitude:

±3V ±20%; 0 dB, -7.5 dB, 15 dB (CSU),

user-selectable

±2.7V ±10%, 0 to 655 feet, (DSU),

user-selectable

Jitter and Wander Performance

Per AT&T TR-62411, ITU-T G.824 (for
internal, loopback and external clock modes)

Connector

RJ-45

Data Sheet

ETHERNET INTERFACE

Compliance

IEEE 802.3, 802.3u, 802.1p&Q

Number of Ports

3, network or user

Port Combinations

3 fiber optic SFPs
2 fiber optic SFPs + 1 UTP
1 fiber optic SFP + 2 UTPs
3 UTPs (Fast Ethernet unit only)

Type

SFP-based:

Gigabit Ethernet – 1000BaseSx,

1000BaseLX10, 1000BaseBx10

Fast Ethernet –100BaseFx,

100BaseLX10, 100BaseBx10

10/100/1000BaseT with SGMII

Built-in:

10/100BaseT

Fast and Gigabit Ethernet SPFs

Note: It is strongly recommende d to order this
device with original RAD SFPs installed. This will
ensure that prior to shipping, RAD has performed
comprehensive functional quality tests on the
entire assembled unit, including the SFP devices.
RAD cannot guarantee full compliance to product
specifications for units using non-RAD SFPs.
For detailed specifications of the SFP transceivers,
see the SFP Transceivers data sheet.

Connector

LC

PSEUDOWIRE

Compliance

IETF: RFC 4553 (SAToP), RFC 5087

(TDMoIP), RFC 5086 (CESoPSN),

RFC 4618 (excluding clause 5.3 – PPP)
ITU-T: Y.1413
MFA: IA 4.1, IA 8.0.0
MEF: 8, 9, 14 (EPL-certified)

Jitter Buffer Size

0.5–180 msec (unframed) with 0.1 msec
granularity

2.5–180 msec (framed) with 0.5 msec
granularity

IPmux-24/A Adaptive Clock

Frequency accuracy: ±16 ppb and G.823

synchronization interface requirements
(clause 6), when locked to a PRC
(stratum 1) or SSU (stratum 2) clock

Frequency accuracy in holdover: ±16 ppb

±1 ppb of aging per day

Number of PW Connections

64

Figure 4. Drop-and-Insert of Full and Fractional E1/T1 Circuits and Ethernet over Fiber

IPmux-24

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TDM Pseudowire Access Gatewa

GENERAL

Timing

Internal
Loopback
Adaptive
External input or output via optional

dedicated RJ-45 port: E1/T1 or
2048/1544 kHz squarewave (RS-422
electrical levels)

Management

SNMPv1, SNMPv3
Telnet
RADview Service Center TDMoIP (ordered

separately)

ASCII terminal via V.24 (RS-232) DCE port

Diagnostics

E1/T1 local loopback
E1/T1 remote loopback
Facility Type 1 (FAC1) inband loopback
CSU loopback as per Telecordia GR-54

Statistics

E1/T1 (per G.826 and RFC 2495)
Ethernet (per RFC 2819)
Jitter buffer indication (overflow,

underflow, sequence error)

Indicators

PWR (green) – Power status
TST/ALM (red/yellow) – Test/alarm status
E1/T1 SYNC (green/red) – E1/T1

synchronization status

LINK/ACT (green) – Ethernet link/activit y

status

EXT. CLK (red/green) – External clock

status

Power

AC/DC: 100–240 VAC, 50/60 Hz
48/60 VDC nominal (40 to 72 VDC)

DC: 24/48/60 VDC nominal (18 to 72 VDC)

Power Consumption

12W max

Physical

Height: 47 mm (1.8 in)
Width: 215 mm (8.4 in)
Depth: 147 mm (5.8 in)
Weight: 0.7 kg (1.5 lb)

Environment

Temperature:

IPmux-24: 0 to 50°C (32 to 122°F)
IPmux-24/H: -30 to 65°C

(-22 to 149°F)

Humidity: Up to 90%, non-condensing

or

Carrier-grade voice
quality without
compression, or
silence suppression

Alarm Relay

Via pin 6, pin 7 and pin 8 of the EXT. CLK
connector (RJ-45), optional

Data Sheet

Table 1. IPmux Family Product Comparison

Feature IPmux-2L

(Ver. 1.0)

TDM service ports 1, 2 × E1 2, 4 × E1 4 × E1 8, 16 × E1 1, 2, 4 × E1/T1 8, 16 × E1/T1
Ethernet network

ports

Ethernet subscriber
ports

Number of PWs 63 64 64 256 64 256
Multi-pseudowire
Advanced clock

recovery
Redundant power

supply
External clock port – – –
Serial data port Optional – – – – –
SSH, SSL, RADIUS – – – –
Network

management
system

1 × FE 1 × FE 1 × GbE network,

1 or 2 × FE 1 or 2 × FE 4 × FE 1 × GbE/FE 1 × GbE/FE

3 3 3 3
–

– – – – – 3

RV-EMS RV-EMS RV-EMS RV-EMS RV-SC/TDMoIP,

IPmux-4L
(Ver. 1.0)

3 3 3

IPmux-4L (GbE)
(Ver. 2.0)

2 × GbE network/user

IPmux-16L
(Ver. 1.0)

3 × GbE network/user
3 × FE network/user

3

IPmux-24
(Ver. 3.5)

1 × GbE/FE network,
1 × GbE/FE
network/user

3 3
3 3

Optional 3

3

RV-EMS (basic shelf
view)

IPmux-216
(Ver. 3.5)

1 × GbE/FE network
1 × GbE/FE network/user

3
RV-SC/TDMoIP,

RV-EMS (basic shelf
view)

IPmux-24

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TDM Pseudowire Access Gatewa

Ordering

STANDARD CONFIGURATIONS

IPMUX-24/1E1/N/N/N
IPMUX-24/1E1CX/N/N/N
IPMUX-24/1T1/N/N/UTP
IPMUX-24/4T1/N/N/UTP
IPMUX-24/FE/1E1/UTP/UTP/UTP
IPMUX-24/FE/1E1CX/UTP/UTP/UTP
IPMUX-24/FE/1T1/UTP/UTP/UTP
IPMUX-24/FE/2E1/UTP/UTP/UTP
IPMUX-24/FE/2E1CX/UTP/UTP/UTP
IPMUX-24/FE/2T1/UTP/UTP/UTP
IPMUX-24/FE/4E1/UTP/UTP/UTP
IPMUX-24/FE/4E1CX/UTP/UTP/UTP
IPMUX-24/FE/4T1/UTP/UTP/UTP
IPMUX-24/FE/A/4T1/N/N/UTP

SPECIAL CONFIGURATIONS

IPMUX-24/+/!/?/~/CC/$/+1/+2/+3

Legend

TDM interface:

$
1E1 Single balanced E1 interface

1E1CX
1T1 Single balanced T1 interface
2E1 2 balanced E1 interfaces
2E1CX
2T1 2 balanced T1 interfaces
4E1 4 balanced E1 interfaces
4E1CX
4T1 4 balanced T1 interfaces

Note: Unbalanced E1 interfaces are provided via
RJ-45 to BNC adapter cables supplied with the
product.

+1 Network interface:
N SFP-ready slot

1 Fast Ethernet/STM-1, 1310 nm,

Single unbalanced E1 interface

2 unbalanced E1 interfaces

4 unbalanced E1 interfaces

multimode, LED, 2 km (1.2 mi)

18A Fast Ethernet/STM-1, Tx –

1310 nm, Rx – 1550 nm, 9/25
single mode (single fiber), laser
(WDM), 40 km (24.8 mi)

18B Fast Ethernet/STM-1, Tx –

1550 nm, Rx – 1310 nm, 9/25
single mode (single fiber), laser
(WDM), 40 km (24.8 mi)

19A Fast Ethernet/STM-1, Tx –

1490 nm, Rx – 1570 nm, 9/25
single mode (single fiber), laser
(WDM), 80 km (49.7 mi)

19B Fast Ethernet/STM-1, Tx –

1570 nm, Rx – 1490 nm, 9/25
single mode (single fiber), laser
(WDM), 80 km (49.7 mi)

+ Ethernet interface (Default=FE and GbE

capabilities)

FE Fast Ethernet interface only

Note: FE option is mandatory when UTP/UTP/UTP
port combination is required.

! Power supply (Default=AC/DC):
WRDC Wide range DC power supply for

environmentally hardened
device

Enclosure (Default=regular enclosure):

?
H Environmentally hardened

enclosure

Clock recovery (Default=standard clock

~

recovery):

A Advanced clock recovery

mechanism (per TDM port)

CC

Package (Default=no carrier-class
package)

C Carrier-class package (external

clock and alarm relay)

2 Fast Ethernet/STM-1, 1310 nm,

single mode, laser, 15 km
(9.3 mi)

2H Fast Ethernet/STM-1, industrially

hardened, 1310 nm, single mode,
laser, 15 km (9.3 mi)

3 Fast Ethernet/STM-1, 1310 nm,

single mode, laser, 40 km
(24.8 mi)

3H Fast Ethernet/STM-1, industrially

hardened, 1310 nm, single mode,
laser, 40 km (24.8 mi)

4 Fast Ethernet/STM-1, 1550 nm,

single mode, laser, 80 km
(49.7 mi)

10A Fast Ethernet/STM-1, Tx –

1310 nm, Rx – 1550 nm, single
mode (single fiber), laser (WDM)
, 20 km (12.4 mi)

10B Fast Ethernet/STM-1, Tx –

1550 nm, Rx – 1310 nm, single
mode (single fiber), laser (WDM),
20 km (12.4 mi)

Data Sheet

5 Gigabit Ethernet, 850 nm,

multimode, VCSEL, 0.55 km
(0.3 mi)

5H Gigabit Ethernet, industrially

hardened, 850 nm, multimode,
VCSEL, 0.55 km (0.3 mi)

6 Gigabit Ethernet, 1310 nm, single

mode, laser, 10.0 km (6.2 mi)

6H Gigabit Ethernet, industrially

hardened, 1310 nm, single mode,
laser, 10.0 km (6.2 mi)

7 Gigabit Ethernet, 1550 nm, single

mode, laser, 80.0 km (49.7 mi)

8 Gigabit Ethernet, 1310 nm, single

mode, laser, 40.0 km (24.8 mi)

8H Gigabit Ethernet, industrially

hardened, 1310 nm, single mode,
laser, 40.0 km (24.8 mi)

17A Gigabit Ethernet, Tx -1310 nm, Rx

-1490 nm, single mode (single
fiber), laser (WDM), 10.0 km
(6.2 mi)

17B Gigabit Ethernet, Tx -1490 nm, Rx

-1310 nm, single mode (single
fiber), laser (WDM), 10.0 km
(6.2 mi)

20 Gigabit Ethernet, 1550 nm, single

mode, laser, 120.0 km (74.5 mi)

22A Gigabit Ethernet, Tx -1490 nm, Rx

-1570 nm, single mode (single
fiber), laser (WDM), 80.0 km
(49.7 mi)

22B Gigabit Ethernet, Tx -1570 nm, Rx

-1490 nm, single mode (single
fiber), laser (WDM), 80.0 km
(49.7 mi)

9F Fast Ethernet, RJ-45 connector,

100m (238 ft)

9G GbE interface, RJ-45 connector,

100m (238 ft)

30 10/100/1000BaseT (with SGMII),

RJ-45 connector, 100m (238 ft)

UTP Built-in 10/100BaseT

Network/user interface:

+2
See the network interface ordering

options above

Note: It is strongly recommende d to order this
device with original RAD SFPs installed. This will
ensure that prior to shipping, RAD has performed
comprehensive functional quality tests on the
entire assembled unit, including the SFP devices.
RAD cannot guarantee full compliance to product
specifications for units using non-RAD SFPs.
For detailed specifications of the SFP transceivers,
refer to the SFP Transceivers data sheet.

+3 User interface:
See the network/user interface

ordering options above

Table 1. Valid Port Combinations

Network Network/User User

N N N
N N UTP
N UTP UTP
UTP UTP UTP
UTP UTP N
UTP N N

Note: The N (SFP-ready slot) option in Table 2 can
be replaced with any SFP transceiver supported by
IPmux-24.

IPmux-24

TDM Pseudowire Access Gateway

SUPPLIED ACCESSORIES

Power cord
AC/DC adapter plug

CBL-RJ45/2BNC/E1/X
RJ-45 to BNC adapter cable (if an
unbalanced E1 interface is ordered)

OPTIONAL ACCESSORIES

RM-35/@
Hardware kit for mounting one or two
IPmux-24 units into a 19-inch rack

Legend

@ Rack mounting kit (Default=both kits):
P1 Kit for mounting one unit
P2 Kit for mounting two units

Data Sheet

CBL-DB9F-DB9M-STR
Control port cable

The Access Company