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You are here: Data Technology | TDM-over-IP-Bridge

LiTi - Alternative networking of telecommunication equipment via data lines

The telephony via data networks is a new alternative to the traditional fixed network or mobile network to transfer voice and data between two contact partners.
LITI (LAN to ISDN Tunneling Interface) is an adapter which transfers up to 30 connections on an ISDN primary multiplex interface via Ethernet LAN / WAN to another LITI (ISDN-Bridge). Within the existing data networks, LITI provides a fast and cost-effective replacement of hitherto used leased lines and/or cable connections.

LITI must be looped as "pair" in a S0 or S2M-connection between two telecommunication equipment. Every LITI provides a S2M- and/or two S0-ports and a LAN interface.
The two devices within a connection are completely transparent to the two S0/S2M interfaces. Therefore, the useable and the signaling channels remain untouched.

Total delay time
The total delay time through LITI (without router, switches, LAN-cable paths) is less than 20 ms. Therefore, the talk is not subjectively disturbed by this delay. The total delay time is calculated from approx. 10 ms processing time plus defined buffer time. The buffer time can be adjusted in wide areas to balance the jitter.

Bandwidth
The required bandwidth for LITI.3000(S2M) is 4.4 Mbit/s; in idle run approx. 0.7 Mbit/s.
The required bandwidth for LITI.100 is 0.160 Mbit/s, in idle run < 10 kbit/s

 

Features of LITI - S2M (LITI 3000):

  • 19" format, 1 HE
  • 1x interface S2M (independent from protocol) RJ45
  • 1 x TCP/IP connection 100/10 Base TX (auto)
  • external mains unit 12V / 240V
  • Configuration interface RJ11

Features of LITI - S0 (LITI 100)

  • Table version
  • 1x interface S0 (independent from protocol) RJ45
  • 1 x TCP/IP connection 10 Base TX
  • external mains unit 14V~/ 240V
  • Configuration interface RJ11

Access types:

  • Local V24 serial
  • Remote via LAN (Telnet)
  • SNMP (Liti.3000)

Security features
The device has no ISDN-access to the LAN outside the ISDN-bridging. Different passwords enable a secure access to the device. A history-memory monitors the total functions. The "download-recovery" is stored by the existing program as long as a new valid program is saved successfully.

In this area you can find drivers, firmware-updates and further information about this product of TAS.