Digital telephone module SFP-E1 with echo cancellation (30 voice channels)
- Legacy PBX, IVR Services, Asterisk IP-PBX
- VoIP Gateways (supports SIP, H.323 and IAX)
- SyncPPP, Frame Relay, Cisco HDLC, Multi-link PPP
- a-Law, μ-Law, and Linear Modes Supported
- Line coding HDB3, AMI
Terratel SFP-E1 module is designed to integrate and connect IP-PBX, IVR systems, VoIP-gateways, other specialized solutions of the Asterisk project or FreeSwitch to office PBXs, as well as the public telephone network PSTN via the E1 interface.
SFP-E1 is an optical module with an SFP form factor (Small Form-factor Pluggable) and support for Ethernet and E1 interface connections.
Digital SFP-E1 module is designed to build digital telephony systems based on Asterisk IP-PBX and exchanges data/voice over E1 channels.
New SFP-E1 module is the latest addition to the D-201E/D-401E digital phone card family for the Asterisk project.
SFP-E1 module design uses unique technologies to support the E1/PRI environment. The SFP-E1 module is designed to connect traditional TDM systems with voice over IP technologies in a single network.
SFP-E1 module is installed in the sfp-slot of network equipment, which allows it to be used in any place where the network is available, and not just at the location of the Asterisk server.
SFP-E1 digital module is compatible with the Asterisk system through the DAHDI interface and can support the following protocols:
- ISDN PRI (Lib PRI)
- SS7 (Lib SS7)
- R2 MFC (Lib OpenR2)
SFP-E1 digital module is compatible with all Asterisk versions and connects to Asterisk using a special DAHDI-enabled driver. A special driver with DAHDI support is available for free on the terratel.eu website.
SFP-E1 module has a hardware echo cancellation function for all voice channels of the E1 stream.
SFP-E1 digital module has the ability to configure via the web interface. follow>>
- Up to 30 simultaneous calls per 1E1 port
- Supports E1 physical interface connections
- TDM protocols support: ISDN PRI, SS7, R2 MFC
- Industry standard RJ-45 port
- SFP form factor
How to configure SFP-E1 Digital Module for Asterisk
The device is designed to emulation of time-division multiplexing (TDM) over a packet switched network (PSN).
For connection to IP-PBX Asterisk the DAHDI interface is used.
A simplified list of steps required to integrate an SFP device into an Asterisk system:
- Download the driver assembly from our ftp server
- Compile and download the driver module for your Linux kernel version
- Generate a configuration file for the DAHDI system (dahdi_span_assignments dumpconfig> /etc/dahdi/assigned-spans.conf)
- Configure Asterisk to use regular DAHDI channels
- Configure SFP module
- Restart the Asterisk server
Connecting SFP-E1 module via Ethernet media converter
If during the deployment of the SFP-E1 module for connecting communication systems based on the SIP protocol and devices using the E1 interface it is not possible to connect it to a local area network (LAN), you must use a budget media converter.
These media converters are designed to convert the signal and then connect the 1000BASE-SX fiber optic cable with a 1000 Base-T twisted pair cable.
Digital Module SFP-E1 for Asterisk Technical Specifications
|Legacy PBX/IVR Services|
|Voice over Internet Protocol (VoIP) services|
|Complex IVR Trees|
|“Meet-Me” Bridge Conferencing|
|VoIP Gateways (supports SIP, H.323 and IAX)|
|Calling Card Platforms|
|PRI Switch Compatibility – Network or CPE|
|HDB3, AMI Line coding|
|CRC-4, not CRC-4, E1 Frame alignment|
|Data Transfer Protocols|
|Voice Transfer Protocols|
|a-Law and Linear Modes Supported|
|Linux kernel 2.6.x|