IP, TDM & DSL Integration
ForeFront FF-STM1-SFP Forefront STM1/OC3 TDMoIP Gateway SFP Module

This unique SFP Module is a miniature TDM over IP/Packet gateway. Now you can transport STM1/OC3 over Ethernet/IP/Packet networks using Pseudowire technology with the convenience of a Small Form Pluggable Module.

• TDM-over-IP SFP - Transparently transports STM1/OC3 over IP/Packet using Pseudowire technology subject to MEF 8 (CESoETH) for carrying TDM traffic over Carrier Ethernet networks Circuit Emulation Services over IP.
• STM1/OC3 Support - STM1, up to 155Mb/s (GR-253-CORE and ITU-T G.957) on a LC duplex connector supporting 15 km optical data link (S1.1).
• Plug and Play - No provisioning or configuration required. Plugs into SFP slot in a Switch, Router or Media Converter (1000BASE-X).
• MSA Compliant - MSA DDM SFF-8472 Compliant SFP with standard. GbE in accordance with IEEE Std 802.3-2008 (20 pin host).
• Saves Money - Eliminate TDM leased line costs. Suitable for Carrier, Enterprise/Business access and enables the migration of STM access links to packet.
• Diverse Applications - Supports migrations and integration of SONET/SDH with IP networks. Perfect for 5G Mobile Operators, Telecom Service Providers, Utilities, Transportation, Oil & Gas, Government, and Energy customers upgrading SONET/SDH microwave or other links to Gigabit Packet Radio or other Ethernet links.
• Industrial Design - Industrial temperature range -40°C to 85°C. Metal package for lower EMI. RoHS compliant.

The ForeFront FF-STM1-SFP is an innovative TDM-over-IP Gateway packaged in an SFP module. 

The device is a new, convenient and easy way to transport STM-1/OC3 across an Ethernet network.

The unit presents a SONET/SDH OC-3/STM-1 as an optical fiber interface externally and connects to Gigabit Ethernet at the 20-pin SFP receptacle.  An internal protocol processing engine supports transparent SONET/SDH over Packet encapsulating SONET/SDH bit-streams as pseudo wires over a packet-switching network using MEF 8 (CESoETH).

The STM1/OC3 optical interfaces supports rates up to 155Mb/s according to GR-253-CORE and ITU-T G.957) and supports 15 km optical data link distances on the TDM side (S1.1).

By eliminating TDM leased line costs the solution saves money and is suitable for Carrier Enterprise/Business access and enables the migration of STM access links to packet.

The device is fully MSA Compliant with MSA DDM SFF-8472 and GbE in accordance with IEEE Std 802.3-2008 (20 pin host).  No provisioning or configuration is required.  The unit plugs directly into SFP slot in a Switch, Router or Media Converter.

Perfect for 5G Mobile Operators, Telecom Service Providers, Utilities, Transportation, Oil & Gas, Government, and Energy customers upgrading SONET/SDH microwave or other links to Gigabit Packet Radio or other Ethernet links.

The module supports packetization of the TDM payload into fixed size data blocks (810 octets), encapsulation of the data blocks with Packet headers, RTP header, and FCS.  The unit transmits packets via electrical Gigabit Ethernet interface towards the hosting system.

In the direction from electrical to optical interface the device supports reception and validation of packets from the hosting system via the electrical Gigabit Ethernet interface and decapsulation of the TDM data blocks from the valid received packets.

Digital diagnostics monitoring (DDM) is available via the 2-wire serial bus specified in the SFF-8472 rev.11.0.  The rugged design has a metal enclosure and supports industrial temperature ranges from -40°C to 85°C.

The typical use-case is a point-to-point pseudo-wire emulation from SFP to SFP.   Individual tunnels are created to separate the pseudo-wire traffic.  The FF-STM1-SFP uses a multi-cast destination MAC-address; Each pseudo-wire needs to be put into a separate Ethernet tunnel using VLAN, EVC, MPLS, VPLS or VPWS.  The units are ‘plug-and-play’ and no configuration is needed.