BLF on external (misdn) Lines

Asterisk Asterisk Support
1

I have two questions :

  1. How can an external line (from misdn) give presence on a SIP phone BLF Light,
  2. Busy/Free indication for external lines.

In other words how to make asterisk to behave like a normal PBX (in secretary’s point of view)!

2

If op_panel is showing the ‘presence’ of the line, then I don’t see why not. Maybe look into that. Good Luck - if you succeed, let us all know :smile:

3

By default it doesn’t show anything for trunks (I have only misdn channels as external trunks).

Is there a way to show misdn channels (trunks) on FOP trunks, even though is not what I want?

4

Well I just checked it out for ya, even though it’s not what you want and guess what mate? It’s not what you want…but here’s how it looks and it works.

The first trunk doesn’t quite look correct but it works on channel 4, which is the only one I could be arsed trying at this time of day, if that’s cool.

[_mISDN/1]
Position=57,58,59,60
Label="ISDN "
Extension=-1
Icon=2

[_mISDN/2]
Position=58
Label="ISDN "
Extension=-1
Icon=2

[_mISDN/3]
Position=59
Label="ISDN "
Extension=-1
Icon=2

[_mISDN/4]
Position=60
Label="ISDN "
Extension=-1
Icon=2

5

I have manage to put misdn trunks on fop but not at sip phone.
Currently using Thomson ST2030 and Grandstream GPX2020.
Any ideas how to make BLF on these phones with misdn trunks?