# Help .. BLF (Busy Lamp Field ) is my config ok?

**URL:** <https://community.asterisk.org/t/help-blf-busy-lamp-field-is-my-config-ok/6624>\
**Category:** Asterisk Support\
**Created:** [May 24, 2006, 7:02pm UTC](https://community.asterisk.org/t/help-blf-busy-lamp-field-is-my-config-ok/6624 "2006-05-24T19:02:47Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![cisla](https://avatars.discourse-cdn.com/v4/letter/c/898d66/32.png) [@cisla](https://community.asterisk.org/u/cisla)\
**Post date:** [May 24, 2006, 7:02pm UTC](https://community.asterisk.org/t/help-blf-busy-lamp-field-is-my-config-ok/6624/1 "2006-05-24T19:02:47Z")

</div>

Hi all, i’m trying to get this BLF (Not to be confused with BLA) to work between Aastra 480i phones frim 1.4 with \* 1.0.9.

Thing is my phone 1235551212 will only show that the other phone is “off hook”…

Here is my config:

sip.conf

[1235551212]  
type=friend  
host=dynamic  
dtmfmode=rfc2833  
username=1235551212  
secret=TesTing1212  
qualify=1500  
context=dialout  
subscribecontext=blf  
musicclass=default  
callerid=Demo 17 \<1235551212\>  
nat=yes  
canreinvite=yes  
accountcode=CC  
callgroup=1  
pickupgroup=1

extensions.conf

[did]  
; DID 3216 - Demo tester  
exten =\> 1234567890,1,Answer  
exten =\> 1234567890,2,Wait(1)  
exten =\> 1234567890,3,Dial(SIP/${EXTEN}|30|jtr)  
exten =\> 1234567890,4,Voicemail(u${EXTEN})  
exten =\> 1234567890,5,Hangup()  
exten =\> 1234567890,104,Voicemail(b${EXTEN})  
exten =\> 1234567890,105,Hangup()

[blf]  
;blf context  
exten =\> 1234567890,hint,SIP/1234567890

when i check my hint status it just shows up with a 0

```
-= Registered Asterisk Dial Plan Hints =-

```

## 1234567890 : SIP/1234567890 State 0

My Aastra 480i phone (1235551212) has a soft key for blf set to value = 1234567890.

am I missing something here???

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<div class="post-metadata">

**Author:** ![RichardHH](https://avatars.discourse-cdn.com/v4/letter/r/a4c791/32.png) [@RichardHH](https://community.asterisk.org/u/RichardHH)\
**Post date:** [May 25, 2006, 5:41pm UTC](https://community.asterisk.org/t/help-blf-busy-lamp-field-is-my-config-ok/6624/2 "2006-05-25T17:41:37Z")

</div>

I dont see  
1234567890  
subscribing anywhere nor do i see its SIP section nor is it in your hint section.

You might want to:

1. Upgrade your VERY old Asterisk to the current, esp. hint and all this stuff experienced some changes
2. Take out ANSWER and WAIT in your dialplan: It makes no sense there but causing charging before any1 is REALLY answering the call. Callers are not amused by that…
3. All phones who should “see” each other must subscribe in the same subscr. context (which is pref. their internal spawn context) where they also share the same HINT definition block.