[root@foxtrot zaptel]# make config install -D zaptel.init /etc/rc.d/init.d/zaptel install -D ifup-hdlc /etc/sysconfig/network-scripts/ifup-hdlc /sbin/chkconfig --add zaptel Zaptel has been configured. If you have any zaptel hardware it is now recommended to edit /etc/default/zaptel or /etc/sysconfig/zaptel and set there an optimal value for the variable MODULES . I think that the zaptel hardware you have on your system is: Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 4. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 5. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 6. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 7. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 8. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 9. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 10. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 11. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 12. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 13. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 14. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 15. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 16. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 17. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 18. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 19. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 20. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 21. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 22. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 23. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 24. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 25. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 26. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 27. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 28. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 29. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 30. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 31. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 32. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 33. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 34. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 4. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 5. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 6. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 7. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 8. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 9. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 10. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 11. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 12. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 13. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 14. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 15. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 16. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 17. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 18. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 19. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 20. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 21. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 22. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 23. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 24. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 25. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 26. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 27. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 28. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 29. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 30. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 31. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 32. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 33. Use of uninitialized value in string eq at xpp/utils/zconf/Zaptel/Chans.pm line 64, line 34. driver should be 'wct4xxp' but is actually 'Unified t4xxp-t2xxp driver' at xpp/utils/zaptel_hardware line 61. [root@foxtrot zaptel]#