10 d – Datatek UTM User Manual
Page 55
U T M U s e r ' s M a n u a l
01/18/08
55
10 D
UPLEX
T
RUNKS
The Universal Trunk will provide fault tolerant trunking with the duplex feature. When a trunk is
duplex, it has two different networks in which the data may traverse. The first is an IP network
using the IP-DSU protocol. The second may be a direct facility, a Frame Relay network, or an
ATM network. The internal DSU or the serial port may be used as the interface to the second
network.
Consider the following diagram:
UTM
Fault Tolerant Duplex Trunk Example
UTM
Node or MPC
Node or MPC
Telephony
Network
T1/E1
T1/E1
IP
Network
IP
IP
Configuration of the UTM is as follows:
local ipaddr=
gateway ipaddr=
dsu type=t1 prof=s0 timing=net tsrate=64 addslot=all
trunk type=hdlc phy=dsu modtype=
trunk duplex=on dest=
restore
Please note that the above sample configuration is for a T1 line, assigns all 24 timeslots, and has
a relatively short line equalization value. These would all be adjusted accordingly in an actual
installation. The modtype selects the protocol used and needs to be consistent with the remote