"...the best thing I have ever seen happen to a T3"
"...the best thing I have ever -- MTV/Viacom NOC

Benefits:

• 87 Mbit/sec dual-channel capability (67 Mbit/sec E3).
• DS3/E3 single channel to dual channel firmware upgrade path.
• Dual channel link aggregation for ordered delivery of packets.
• Jumbo-frame/GbE and optical SFP firmware upgrade path.
• Rx-to-Tx 100% packet tracking/auditing stats.
• Fanless reliability and rack-mountable.
• 400kByte buffering.
• HTTP and SNMP management.
• Enhanced frame-lock algorithms for higher bit-error-rate environments.
• Link failover protection.
• 10%-30% faster than existing routers and HDLC products.
• Zero-configuration installation.

Product Summary:

The E3Switch Ethernet to single or dual DS3/E3 switches provide a zero-configuration method for enabling 100BaseTX Ethernet data to pass, transparently, over T3 and E3 circuits at up to 87 Mbits/sec. There's no need to worry about VLAN/VoIP issues or packet sizes; the converter makes the T3/E3 circuit appear as a direct, transparent Ethernet end-to-end connection. Dual channel units offer link-aggregation for ordered delivery of packets and automatically determine shortest path for transmission.

E3Switch converters provide several important features that customers will appreciate and which aren't found in competing products. Rigorous attention to design protocols allows users to measure true end-to-end data speed improvements of 10%-30% the performance of existing routers or competing products that use slower HDLC. For large file-transfer projects or cost-sensitive installations, this often means weeks of saved time or expensive bandwidth preserved.

Fanless operation and extremely low part-count design allows use with greater reliability and in harsher environments. NEBS Level 3 multicard chassis are available.

Performance upgrade paths exist in all single-channel units, which ship with the capability for the second T3/E3 channel to be activated by password when more bandwidth is required. This is also one of the few products offering a seamless upgrade to jumbo packets and optical SFP as GbE technology matures.

Management functions include both comprehensive SNMP statistics with link up/down and DS3 FEAC notifications as well as one-click HTTP, color-coded monitoring of link operational status and bit-error rate. Unique packet auditing display allows individual tracking of every packet from ingress to disposition/egress -- never lose another packet.

Robust frame-lock algorithms maintain link stability and high-BER tolerance on noisy paths such as multi-hop microwave. Link failover protection ensures uninterrupted service if one of the two DS3/E3 paths goes down.

Requirements:

• Must be used in pairs. (My application requires a single converter)

Detailed Capabilities:

Power/Mounting:

• VAC or VDC -- 100-240 VAC or +/- 7-50 VDC.
• Rackmount for VAC -- DIN rail or rackshelf mount for VDC.
• Multi-card chassis available.

VoIP:

• VoIP ready with dedicated queues.
• Ultra-low latency packet forwarding.

VLAN/Packet-size:

• All VLAN and q-in-q tags passed transparently.
• Management VLAN setting.
• No packet size issues (1600+ bytes accepted).
• GbE jumbo frames (9700 bytes) via firmware download.

Date Rate:

• Bit-rate: 44.736 Mbit/s DS3 -- 34.368 Mbit/s E3.
• User data-rate: True IP user-data rates will be 10%-30% faster than routers/HDLC-units.
  

  True IP Data Rate

  Medium	Dual Channel	Router/HDLC	Single Channel	Router/HDLC
  E3	66.4 Mbit/sec	60 Mbit/sec	33.2 Mbit/sec	30 Mbit/sec
  DS3	86.8 Mbit/sec	79 Mbit/sec	43.4 Mbit/sec	39 Mbit/sec

Noise Tolerance:

• Robust frame locking algorithms maintain connectivity on noisy links such as multi-hop, high-BER microwave paths.

Management:

• Inband from both LAN and DS3/E3 ports with VLAN isolation options.
• SNMP v2c with VACM to limit access to sensitive areas.
• Supported notifications include: link up/down, ds3/e3 line status change, authorization violation, coldstart.
• Full MIB support including ds3, mau, dot3, ifMIB...
• HTTP web status with large BER, LAN/DS3 error codes and packet-auditing statistics.

LAN:

• 100Base-TX standard. GbE, jumbo, and SFP 1000Base-X or copper available via firmware upgrade.
• 400kByte buffering.
• Link aggregation of dual-channel units guarantees packets are delivered in order.

DS3/E3:

• Dual channel units automatically determine shortest transmission path.
• Compatible with C-bit/M13/M23/G.751-framed and unframed links.
• DS3: Generates a C-bit, clear-channel, B3ZS, AMI signal -- 300 meters max.
• E3: Generates a G.751, clear-channel, HDB3, AMI signal -- 480 meters max.
• Purchase as single or dual DS3/E3 channel. Upgrade to dual with password unlock when ready.

Support/Misc:

• Free FedEx Priority shipping.
• One-year warranty.
• RoHS Compliant.
• Firmware upgrades for life.
• Tech-savvy staff available on weekends and after hours.

Simply plug in a LAN and a T3/E3 and you're up and running.

Typical Network Topology

Achieve higher link utilization.
Eliminate the 10%+ overhead of a Router's HDLC.

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