sundance-communications.com/forum Forums TDM Business Telephone Systems Toshiba Telephones & Systems CIX100 with voice issues at 2 different remote sites.

I've got a situation with a CIX100 with an LIPU for internal and an MIPU for external. The External port has a public IP and goes straight out. The remote sites (1 att and 1 comcast) both have one way communication. We need intercom and it's not working. At the Comcast site we can make outbound calls and everything works as expected. At the ATT site we can't get voice at all but the call does go through.


System: CIX100 with Expansion Cabinet
LIPU/S Internal IP
MIPU 12port External IP
iES32 with Flash Voicemail

We have 13 internal phones and 3 remote phones 2 at the Comcast internet site and 1 with the potential of 2 at the ATT site.

Comcast site:
Phones setup to go to the MIPU public IP address internet router is a Netgear that's acting as as an inbound firewall but no outbound restrictions.

ATT site:
Phones setup to go to the MIPU public IP address and the internet router is the ATT Provided router with no outbound restrictions.

I've contacted my local dealer who indicated "I'll see what we can do" when I asked for updated firmware:

CIX100 - Currently - AR5.20 MT052.00
MIPU - Currently - MIPU01_01DA200
LIPU - Currently - LIPX51D
IPT2010-SD - Currently - All over the place
IPT2020-SD - Currently - All over the place


Please help!

I'm an MCSE that got Toshiba Certified at my last job but apparently the certification doesn't follow you as I can't call anymore to tech support.

I was poking around and I think I've fixed this! In Prog 250 (IPT DATA Assignment) #16 (IPT NAT/No Peer to Peer) it was defaulted to Disabled and I enabled it and it immedately worked for the ATT site. I'm waiting on an update from our employees at the Comcast site to confirm it's working there too.