Problems with Cisco VoIP Phones - PLEASE HELP MT!!

RouterOS General
1

A cisco 7960 works flawlessly masqueraded thru MT box

Cisco 7905 will not maintain a connection to the Call Manager Server.
Reboots every 1 minute, BUT if I connect MT → linsys DSL router → cisco
7905 all works well doing douible NAT.

Any ideas?

Jeff

2

Daiceman,
I have had a problem with the MT when using SIP with non-cisco phones.
I had to change the “UDP stream timeout” to an hour to keep the phones working.
They could dial out but not recieve calls after the connection timed out.
the timeout is set under OS 2.8

/ip firewall connection tracking> set udp-stream-timeout=

Tim

3

Set up a box with 2.8.23 and the phone works flawlessly.

Same box with version 2.9.10 kills the phone connections.

OK Mikrotik, what is the differnace with SIP on the two versions?

4

The phone does work if the interfaces are bridged.