Keymile XMC20

KEYMILE XMC20 IP Platforma koja podržava TDM i MPLS-TP

Hibridna platforma istovremeno podržava paketski prenos (IP, 1-10GbE, MPLS-TP) i TDM servise SDH(STM-1/STM-4/STM-16) i PDH do nivoa pojedinačnih kanala.

Za primenu u elektroprivredi važno je da su PDH servisi podržani do nivoa pojedinačnih kanala (n x 64kbps G.703, V.35/X.21, … sve do RS485) i to u okviru istog čvora koji na transportnom nivou podržava 1-10GbE i STM-1/4/16. To praktično znači da su PDH sistem i SDH sistem podržani u okviru jedinstvene platforme što donosi značajne direktne uštede u CAPEX-u i OPEX-u. Podrška MPLS-TP protokola i podržani kapaciteti ispunjavaju i uslove koji će u budućnosti biti zahtevani  u cilju primene Smart Power Grid rešenja.

Za primenu u drugim namenskim mrežama važna je fleksibilnost sistema i potpuna podrška savremenim voice i data servisima. Po pitanju bezbednosti XMC20 spada u sam vrh tehnoloških rešenja. Platforma nema ”back-door” i druge mehanizme koji kompromituju bezbednost.

Generalno, KEYMILE uredjaje karakteriše dug radni vek i visoka pouzdanost, kompatibilnost ”unazad” i podrška za nove, savremene servise.

web strana u izradi – za više informacija: 011 785 4545 ili

Full Hybrid Multi-service Access & Transport Platform for Communications Networks in Mission-Critical Systems

XMC20 is a purpose-built multi-service telecommunication family of network elements. It was designed to meet the stringent access & transport networks requirements for Mission-Critical Systems (MCS).

Being a  full hybrid access and transport platform, the XMC20 supports the co-existence of native TDM and packet-based data transmission in one single network element. Thus, it is capable to fully evolve towards packet-based transport networks (MPLS-TP). With this, our customers have the flexibility to choose the best technology for their mission-critical applications. This lowers the operational costs and enhances the reliability and the availability of services.

The XMC20 provides the same scalability in TDM as well as in packet-based networks for highest availability under any circumstances. Comprehensive QoS functions (Quality of Service) guarantee reliable data transmission. Equipped with numerous redundancy and protection functions, the German-produced XMC20 is also backdoor and spy free. It is mechanically robust and can be operated in fan-less mode due to its low power consumption and low number of components, providing a very good eco-footprint. In addition, it profits from the extended product-life-cycle of the KEYMILE products

All services in XMC20 are administered by a central network management system UNEM. The integrated management systems brings maximum synergy through managing all services on one platform. An easy-to-use local craft terminal (ECST) is as well available for our customers.


XMC20 platform highlights

  • Full hybrid concept for coexistence and inter-working of native TDM and packet services within the same node. Protection and redundancy functions for highly available data transmission Wide range of applications and access interfaces supported. Support for various transmission interfaces and protocols, including 10 Gbps, SDH STM-16, MPLS-TP and many others
  • Fan-less operation supported, robustness Guaranteed long life cycles due to state-of-the-art FPGA technologies and own manufacturing plant Wide array of services which include 3rd party equipment integration and maintenance All KEYMILE equipment and selected 3rd party equipment is managed under one Network Management System


The system family  
The sub-rack XMC25 offers 21 slots for cards. It is especially suitable for large access points which is to serve a large number of interfaces.
XMC23 offers the same functions as XMC25 in a more compact sub-rack of 4 height units.
XMC22 provides 4 slots in a 2-HU sub-rack for installations where space is very limited.


LineRunner SHDSL DTM is a desktop for the connection to the SHDSL TDM-based line card SDSL8 with flexible subscriber interfaces.



MPLS-TP for Misson Critical Systems

Interfaces Overview


TDM Packet Telephony
G.703 2 Mbps Ethernet Chassis Switch SIP Voice Media Gateway
G.703 64 kbps Label Edge Router (LER)
Ethernet-over-SDH (EoS) Label Switching Router (LSR)
Ethernet-over-PDH Circuit Emulation over Packet Networks
Cross-connect (nx 64 kbps,  2 Mbps)


Subscriber interfaces

Telephony Data DSL
FXO GbE (optical) SHDSL (EFM)1)
E&M 10/100/1000BaseT
Local Battery Phone STM-1/STM-4/STM-16
(in future release)
G.703 2 Mbps
G.703 64 kbps codirectional
G.703 64 kbps contradirectional
RS485 (2-wire, 4-wire)


Network interfaces

Packet SDH/PDH
1 GbE and 10 GbE, optical STM-1/STM-4/STM-16
GbE, electrical SHDSL (TDM)
SHDSL (EFM)1) n x G.703 2 Mbps

1)  Available with next release

Technical Data and Features

System Features
System architecture Fully modular open architecture, any service at any slot
Hybrid back-plane for Ethernet and native TDM services
Fan-less operation supported
Chassis switching functionality
MPLS-TP according IETF RFC 5921 (07/2010)
Unit Protection 1:1 equipment protection for core unit, SDH units, various PDH units and media gateway
Network Protection RSTP/MSTP (Rapid Spanning Tree Protocol / Multiple Spanning Tree Protocol)
Ethernet protection switching
MSP (Multiplex Section Protection)
SNCP (Subnetwork Connection Protection)
1+1 Path-Protection
Synchronization via Ethernet Synchronous Ethernet according ITU-T G.8262 (SyncE)
Ethernet Synchronization Messaging Channel according ITU-T G.8264 (SyncE ESMC)
Precision Time Protocol Version 2 according IEEE 1588-2008 (PTP)
Synchronization via TDM SETS according ITU-T G.813
PETS according ITU-T G.823
Switching capacity up to 62 Gbps (XMC25)
TDM cross-connect capacity 128 x 2 Mbps
Ethernet back-plane capacity 400 Gbps
Operation &Maintenance Ethernet OAM according ITU-T Y.1731 1)
VLAN Bridge Functionality
VLAN Support According IEEE 802.1Q (port- und tag-based)
No. of VLANs 4089
VLAN Ether Type 0x8100 (Single Tagged Frames)
0x8100 (Q-in-Q Frames)
Traffic prioritization CoS Handling according IEEE 802.1 Q
Traffic classification based on
– Port (port default priority)
– Ethernet priority bits
– IP DSCP -field
Security Ingress Storm Control
Protection Ethernet Ring Protection Switching (ERPS) according ITU-T G.8032v2 (03/2010)
Authentication According IEEE 802.1X
MPLS-TP Functionality
MPLS-TP implementation According IETF RFC 5921 (07/2010)
Attachment Circuits (AC) On core unit and on service units
MPLS-TP ports On core unit
Node function Label Edge Router (LER)
Label Switching Router (LSR)
MPLS-TP services MPLS-TP Transport
Virtual Private Wire Service (VPWS)
Virtual Private LAN Service (VPLS) 1)
OAM-functions Continuity Check (CC)
Remote Defect Indication (RDI)
Protection 1:1 Bidirectional Protection Switching (revertive, nonrevertive)
TDMoIP gateway SAToP according IETF RFC 4553
CESoPSN according IETF RFC 5086 1)
Ethernet over SDH gateway Framing-Procedure GFP according to ITU-T G.7041
Virtual Concatenation according to ITU-T G.783
Link Capacity Adjustment (LCAS) according to ITU-T G.7042
Ethernet over PDH gateway PPP-, Multi-Link-PPP- and HDLC-termination
VoIP media gateways SIP
Interfaces – Uplink, Cascading, Management
1 or 10 Gigabit Ethernet 2 x optical SFP+ based and 3 x electrical
SDH 2 x STM-16/4, 2 x STM-4/1, 4 x 100/1000BaseT per SDH-unit
Management 10/100BaseT for local configuration
10/100/1000BaseT for central management
Interfaces – User Side Ports per Card
Ethernet (optical/electrical, SFP-based) 12
Ethernet (electrical with PoE+) 12
Ethernet (electrical, high density) 24
SHDSL (EFM) 1) 24
POTS (with enhanced voltage protection) 16
FXO (exchange line interface) 12
E&M 8
Local Battery Phone 8
Serial data interfaces
(V.24/V.28, X.21/V.11, V.35, RS485)
2 Mbps/E1 (G.703) 8
2 Mbps/E1 (G.703) over SDH 48
64 kbps (G.703) codirectional 8
64 kbps (G.703) contradirectional 2
Capacity XMC25 XMC23 XMC22
Number of slots 21 8 4
Bandwidth per slot 1 and 10 Gbps protected (1:1) backplane access 1 and 10 Gbps protected (1:1) backplane access 1 Gbps
Slot width 20,32 mm 20,32 mm 20,32 mm
Dimensions (W x H x D) and Weights XMC25 XMC23 XMC22
19″ subrack with front cover and cable tray 482,6 x 309,5 x
304,3 mm,
7,7 kg
482,6 x 176,1 x
303,3 mm,
5,3 kg
482,6 x 94,9 x
303,3 mm,
3,6 kg
Installation 19″ and ETSI mounting practice 19″ and ETSI mounting practice 19″ and ETSI mounting practice
EMC, Safety and Powering
Product family standard EN 300 386 V1.3.2
ETSI ES 201 468 V1.3.1 – testlevel 2
EN 55022
ITU-T K.21
ITU-T K.45
EN 50121-4 (EMC Railway applications)
Safety IEC/EN 60950-1
Input voltage nominal (min/max) -48/-60 V DC (39,5 V DC … 72 V DC)
Operation Environment
Temperature range system (extended) -25 °C … +60 °C according ETSI EN 300 019-1-3, class 3.3, extended
Humidity According ETSI EN 300 019-1-3,  class 3.2, up to 95 %, non-condensing