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 | Main features 
 ApplicationsBridge or routerEmbedded LinuxIP filter and NAT E1 framed/unframed modes E1 drop-insert interface Power: 220V AC or 36..72V DC 
 
 ResourcesLAN interconnections Remote internet access Interface converter 
 
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Description
ELF2-Rxx can be used on the primary E1 channels as IP router, bridge or firewall.    The possible router modifications are listed in the table below.
As distinct from competitor products, the ELF2 router has the following advantages:
- The second E1 port presence, which can be used for drop-insert schemes and daisy  		  chain connections 
-  The extended capabilities of CAS signalization in timeslot 16 
-  The router is based on the Linux kernel, well proved system in telecom applications 
-  Modular software gives additional flexibility in many applications 
Router software is based on the Linux system and provides following functions    (package version 2.40):
| WAN protocols 
 |  | Ethernet 
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| Synchronous PPP 
 |  | Several IP addresses in one interface 
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| Cisco HDLC |  | Remote IP changing 
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| Frame Relay |  | Access point IEEE 802.1Q (VLAN) | 
| Two E1 aggregation into one link (for ELF2-REE) 
 |  | 802.1Q bridge transparency 
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| Half bridge through WAN interface (in CHDLC mode) |  | Supports up to 4094 VLANs 
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| Bridge: |  | IP маршрутизация: | 
| STP (IEEE 802.1D) support 
 |  | Statical routing by destination IP, TOS, IP filter labels 
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| Local traffic filtration 
 |  | RIPv1 (RFC1058) | 
| VLAN transparency 
 |  | RIPv2 (RFC1723) | 
| Transparent IP, IPX, NetBEUI transmission via WAN interface 
 |  | RIP md5 authentication 
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| Compatibility with Cisco bridges 
 |  | OSPF (RFC2328) | 
| Bridge groups support 
 |  | BGP4 (RFC1771) | 
| Simultaneous routing/bridging |  |  | 
| IP accounting: |  | QOS support: | 
| Iptables traffic classification 
 |  | Packets queues with assigned priorities | 
| Statistics via rsh |  | Traffic shaping | 
| Netflow support 
 |  | Packets classification by port number, TOS and other options 
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| IP filter: |  | NAT: | 
| Complex chains of rules 
 |  | IP source and destination translation | 
| Packets classification by IP address, protocol, TCP/UDP port number 
 |  | Translation befor and after routing | 
|  |  | Masquerading | 
| Other services: |  | Control: 
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| ping |  | Console | 
| traceroute |  | Telnet | 
| NTP client 
 |  | tftp server and client 
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Order codes
| ELF2-RV | V.35, Ethernet 10/100 (*) 
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| ELF2-RV-4U | ELF2-RV for 19" crate, 4U height (**) 
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| ELF2-RE | E1 framed/unframed, Ethernet 10/100 (*) 
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| ELF2-RE-4U | ELF2-RE for 19" crate, 4U height (**) 
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| ELF2-REE | E1 framed/unframed/drop-insert, Ethernet 10/100 (*) 
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| ELF2-REE-4U | ELF2-REE for 19" crate, 4U height (**) 
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* power source is not included
** power from crate
Accessories
| BPE-220 
 
 | Power module for ELF2 (220VAC) 
 
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| BPE-60 
 
 | Power module for ELF2 (DC-DC 36..72 V) 
 
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| CR-10-AC 
 
 | 19" 4U crate, 10 slots of ELF2, power 220VAC 
 
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| CR-10-DC 
 
 | 19" 4U crate, 10 slots of ELF2, power 48..72VDC 
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