
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.
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
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| The system family | |
|---|---|
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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. |
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XMC23 offers the same functions as XMC25 in a more compact sub-rack of 4 height units. |
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XMC22 provides 4 slots in a 2-HU sub-rack for installations where space is very limited. |
| CPEs | |
|---|---|
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LineRunner SHDSL DTM is a desktop for the connection to the SHDSL TDM-based line card SDSL8 with flexible subscriber interfaces. |

Interfaces Overview
Functions
| 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 |
|---|---|---|
| POTS | 100BaseFX | SHDSL (TDM) |
| FXO | GbE (optical) | SHDSL (EFM)1) |
| E&M | 10/100/1000BaseT | |
| Local Battery Phone | STM-1/STM-4/STM-16 | |
| ISDN (in future release) |
G.703 2 Mbps | |
| G.703 64 kbps codirectional | ||
| G.703 64 kbps contradirectional | ||
| V.24/V.28 | ||
| X.21/V.11 | ||
| V.35 | ||
| 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) |
| Gateways | |
|---|---|
| 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 |
| SHDSL (TDM) | 8 |
| POTS | 64 |
| 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) |
4 |
| 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 |





