Alcatel Unleashed

Hi all,,
Please I need help to solve this issue..
Our LAN is consisted of multiple omni 6500 switches and when I connect my Ip phones to any of them it works fine...but when we connect ip phones on different LAN consist of Cisco switches and the ip phones can't connect to our pabx...it shows message "tftp no response "".
Please note that the ports on Alcatel switch ans cisco switch are configured as Access ports and the admin of Cisco LAN refuse to configure the port as trunk port...

Please help me to solve this problem

the problem is solved..it was due to security configuration in Cisco switch..

if due to security configuration , how do you solve it ?