Easy routing question (maybe)

RouterOS General
1

MT box with 3 ethernets

eth1 DSL
eth2 Local lan masqueraded
eth3 cat5 to T-1 router.

eth1 is for internet traffic
eth3 is for dedicated T-1 to VoIP server from Cisco phones.

What I want it to route all traffic destined to 1.2.3.4 (the voip server) to travel via eth3.

What is the best way to handle this?

policy routing?
static route?
fancy masquerading?

Thanks in advance

Jeff

2

a static route would be the easy way, if you want all traffic and not just voice traffic.

3

Yup, all traffic destined to 1.2.3.4 will only be voip traffic from the phones

4

OK, I have the static route and 1 of 2 models of phone works.

A Cisco 7940 will establish its connection and make call fine.

A Cisco 7905 will continuously reboot, BUT if we double NAT, say thru a dsl router to the MT to the T-1 it will work OK.

Any ideas?

5

do you have a route on the other side sending traffic back though the T1?

What is diffrent in the phone configs? do the ciscos check for new software everytime they boot? if they do is it on the same server. what would cause a reboot, lack of registration? or somthing else. I have not used the Cisco phones very much.