Can't subscribe to Call Parking BLF lamps

General
1

Hello fellow voip enthusiasts,

I’m trying to subscribe to my voip.ms Call Parking BLF lamps from my Polycom VVX411 phones, but I keep getting SIP 404 Not Found response.

call_parking_blf_extensions
call_parking_blf_extensions808×636 45.7 KB

Example response and request:

Session Initiation Protocol (404)
    Status-Line: SIP/2.0 404 Not Found
    Message Header
        Via: SIP/2.0/UDP 192.168.1.51;branch=z9hG4bK7e6ef329A76EF439;received=71.192.0.144;rport=26535
        From: "40000_RECEPTIONIST" <sip:40000_RECEPTIONIST@montreal.voip.ms>;tag=CDFF7B0A-128CDC58
        To: <sip:P701_2565@montreal.voip.ms>;tag=as506af22e
        Call-ID: 68bdd99d403cda514aa9e349237b5558
        [Generated Call-ID: 68bdd99d403cda514aa9e349237b5558]
        CSeq: 2 SUBSCRIBE
        Server: voip.ms
        Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH, MESSAGE
        Supported: replaces, timer
        Content-Length: 0

Session Initiation Protocol (SUBSCRIBE)
    Request-Line: SUBSCRIBE sip:P701_2565@montreal.voip.ms SIP/2.0
    Message Header
        Via: SIP/2.0/UDP 192.168.1.51;rport;branch=z9hG4bK7e6ef329A76EF439
        From: "40000_RECEPTIONIST" <sip:40000_RECEPTIONIST@montreal.voip.ms>;tag=CDFF7B0A-128CDC58
        To: <sip:P701_2565@montreal.voip.ms>
        CSeq: 2 SUBSCRIBE
        Call-ID: 68bdd99d403cda514aa9e349237b5558
        [Generated Call-ID: 68bdd99d403cda514aa9e349237b5558]
        Contact: <sip:40000_RECEPTIONIST@192.168.1.51>
        Allow: INVITE,ACK,BYE,CANCEL,OPTIONS,INFO,MESSAGE,SUBSCRIBE,NOTIFY,PRACK,UPDATE,REFER
        Event: dialog
        User-Agent: PolycomVVX-VVX_411-UA/6.4.6.2640
        Accept-Language: en
        Accept: application/dialog-info+xml
        Authorization: Digest username="40000_RECEPTIONIST", realm="montreal.voip.ms", nonce="541f3bac", uri="sip:P701_2565@montreal.voip.ms", response="10052451b09a789b3fb036c4254bc21c", algorithm=MD5
        Max-Forwards: 70
        Expires: 3600
        Content-Length: 0

Polycom phone config:

attendant.resourceList.71.label="Parking Slot 1"
attendant.resourceList.71.address="P701_2565"
attendant.resourceList.71.type="automata"

This all works PERFECTLY on my own FreePBX parking lots, but not with voip.ms.

What am I doing wrong with Voip.ms?

Thanks!

2

Hello BigVoIP

We recently replied back to your ticket, please verify

3

Hello @William , thank you for replying. Yes, it appears that BLF hadn’t been fully enabled on my account the first time around. Support team has fully enabled BLF for extensions and parking slots now.

1 Like
4

How did you know it wasnt “Fully” enabled? Ive been struggling, i sent in a chat and the enabled BLF again…but it was already enabled. :person_shrugging:

5

Hi @KelownaVoip , I’d love to help, but it’s difficult without more context. What specific phone hardware or softphone are you trying to use BLF on? Have you used Wireshark to inspect the SIP requests and responses from your device? Because BLF configuration is complex and differs for every manufacturer, voip.ms probably can’t do much to help you. A packet trace showing those SIP 404 responses to a valid BLF subscription request (see in my post above, you can use Wireshark to make these) will prove if it’s not yet fully enabled on your account.