VoIP gateway

RouterOS General
1

hello all,

I’m trying to setup an MT router as a voip gateway.
I tried a Zaptel card, and an AVM isdn card with the same results…

when i call from the local network, works fine
when i try from a remote network it doesnt work at all.

My setup is

MT router with:
1 Local ethernet interface (localnet) (192.168.100.xxx)
1 DMZ ethernet interface (some real ips)
1 ethernet interface connected to the adsl modem
1 sdsl interface (xpeed)

MT remote router
1 remote Local ethernet interface (remotenet) (10.122.2.xxx)
1 remote DMZ ethernet interface (some real ips)
1 ethernet interface connected to the remote adsl modem
1 remote sdsl interface (xpeed)

the two routers are connected through the sdsl interface.

I’m trying to call from remotenet to localnet.

I use the same version and same configured clients (myphone 0.2b12)



Please help…

2

These are my settings on my MT box..

/ ip telephony region 
/ ip telephony voice-port isdn 
add name="isdn1" autodial="" region=germany msn="2310427343" lmsn="" playback-volume=0 \
    record-volume=0 agc-on-playback=no agc-on-record=no software-aec=no aec=yes \
    aec-tail-length=short disabled=no 
/ ip telephony voice-port voip 
/ ip telephony gatekeeper 
set gatekeeper=local remote-id="" remote-address=0.0.0.0 
/ ip telephony aaa 
set use-radius-accounting=no interim-update=0s 
/ ip telephony numbers 
add dst-pattern="9_" voice-port=isdn1 prefix="" disabled=no 
/ ip telephony codec 
move G.729A-8k/sw 
move G.729-8k/sw 
move G.723.1-6.3k/sw 
move G.711-uLaw-64k/sw 
move G.711-ALaw-64k/sw 
move GSM-06.10-13.2k/sw 
move LPC-10-2.5k/sw
3

it seems that even though i connect to a 10.122.2.xxx address on my MT box, it answers from another interface (with a real ip)…

This is why i connect from the same lan, but not from remotelan.

Dear MT boys, is this gateway binds to a specific interface ?

4

I just found that if you WinBox or SSH to the external IP of your router intstead of the internal the source IP that MT uses is different … which may fix your problem . I’ve been fighting with the gatekeeper all night, trying to get NAT to work with it … not sure what im doing wrong, or if MT is simply broken. Anyone using MT as a gatekeeper successfully?

Sam