configuring cm list/tftp timeout

laposilaszlo · ‎07-26-2010

hello,

I have a UC540 + 2 x 7937 phones with almost default config. I removed the firewall part from the UC540, the rest is at default.

If i connect the phones to the internal switch ports, they work well.... i can make internal calls.

I configured an ip address on the fe 0/0 of the UC540 with ip address 172.17.8.160/24.

I installed IP Comm on my laptop and cofigured it with tftp 172.17.8.160.

I can call the the two7937 phones, everything is working.

I take one 7937 and disable dhcp, configure an ip address from the 172.17.8.0/24 subnet,and the tftp server 172.17.8.160.

When the phone boots it stays a long time in configuring CM list then tftp timeout.

From the phone i can ping the UC540 and from the UC540 the phone.

What is the problem here?

Thank you,

laszlo

EU UC Support · ‎10-21-2010

I have the same issue with my Wireless 7925 phones.....Did you find out what was wrong?

Regards,

Sanjay

laposilaszlo · ‎10-21-2010

hello,

There is an ip tftp-server source address option on the UC!

By default this is the internal/lan address of the UC.

The UC will reply whit this address to tftp request and the external phones do not

know about this subnet/ip address!

Change the ip tftp-server source to the external address of the UC

or

make sure the external phones can reach the tftp-source address.

thank you,

laszlo