[Asterisk-Users] MWI light on Cisco Phones

Rich Adamson radamson at routers.com
Thu Sep 2 07:37:16 MST 2004


> Hi all, I'm having sudden MWI problems. Everything else on the phone 
> works fine though.
> 
> I have three Cisco 7940s.
> 
> Asterisk server is behind a firewall running NAT. (192.168.1.202/24)
> 
> Phone #1 - On the same subnet 192.168.1.250. Everything works great.
> Phone #2 - On a different subnet, 192.168.2.0/24. Everything works fine 
> except the MWI. It never comes on. This is over an IPSEC VPN, but it's 
> still behind NAT. No port or protocol restrictions.
> 
> Phone #3 - Out on the public internet (public IP), it accesses Asterisk 
> through a open hole on the firewall (5034 is open, UDP). Everything 
> works great except MWI never comes on.
> 
> The firewall is a PIX firewall. The only ports open to my asterisk box 
> are 22(ssh) 80(www) and UDP 5034(SIP). It appears SIP works great 
> because the calls function fine.

Not sure I understand what you're doing here. Sip uses udp 5060 by
default. Did you change that to 5034?

Have you looked at the PIX config function called 'sip fixup' or something
like that?

Rich





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