MIC,LSC, Security Endpoints

Regarding security endpoints, you have 2 opportunities :

  • Newer phones are using more an existing Mafufacturing Installed Certificate , this is the MIC
  • Meanwhile , old phones will use a Locally Significant Certificate ( LSC) which will be installed by the Certificate Authority Proxy Function (CAPF)

As LSC must be a transaction between the Ip phone and the CAPF , here is the process as it is issued :

  1. IP Phone generates a public/private key pair
  2. A TLS Session is established with the CAPF Service and the keys and identity are sent from the phone to CAPF
  3. The CAPF Service creates and sends an LSC to the phone
  4. The IP Phone installs the LSC

Also for info, the CAPF Service must be in the phone CTL file , which is downloaded from the TFTP when the phone boots .

PVID0 Specifications

As we have already seen it before , if the voice gateway is unable to match an inbound leg for the call , your call will take the properties of the PVID0 .

Don’t forget that you can’t update any properties if the PVID0 is hitted .

Let’s review then the specificities of this default dial-peer:

For POTS dial-peer

  • No IVR applications possible

For VOIP dial-peer

  • Any codec
  • fax-rate voice
  • ip precedence 0
  • No Resource Reservation Protocol ( RSVP)
  • VAD enabled
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