connectivity to unix server

From: vijay (vgodavarthy_at_rediffmail.com)
Date: 08/23/04 

Date: 22 Aug 2004 21:40:28 -0700

I am using SCO OPENSERVER 5.0.0 with 35 users.I am now facing a
problem, the number of telnet connections are 25 maximum. If the 26
connection is requested we are getting the message \"ALL PORTS ARE IN
USE\" and it is not connected. I would appreciate if you can send me a
solution to increase the number of telnet connections from 25 to 35.