Need help implementing SLA(shared line appearance)

Asterisk Asterisk Support
1

Hello,
I have read the doc/sla.pdf, and a couple of blog posts about setting up sla. I have followed them and cannot get it working. Here is my setup, also SIP/525 is an extension that on my system.
1.
sla.conf
2.
[line1]
3.
type=trunk
4.
trunk => Zap/1
5.

  2. [525]

  3. type => station

  4. device => SIP/525

  5. trunk => line1

  6. context => internal

  8. extensions.conf

  9. [line1]

  10. exten => s,1,SLATrunk(line1)

  12. [sla_stations]

  13. exten => 525,1,SLAStation(525)

  14. exten => 525_line1,1,SLAStation(525_line1)

  15. exten => 525_line1,hint,SLA:525_line1

  19. asterisk*CLI> sla show trunks

  20. asterisk*CLI>

  21. =============================================================

  22. === Configured SLA Trunks ===================================

  23. =============================================================

  24. ===

  25. =============================================================

  27. asterisk*CLI> sla show stations

  28. asterisk*CLI>

  29. =============================================================

  30. === Configured SLA Stations =================================

  31. =============================================================

  32. ===

  33. ============================================================

2

I upgraded to the newest zaptel and asterisk versions and everything works now. I was using asterisk-1.4.17 and zaptel-1.4.8, so maybe there is a bug in the old asterisk version…