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New Member

[SOLVED] Provisionning VG200 series via Kurmi software - How the guess the magic_number?

Hi dear community,

One of my client wants to configure VG200 (224) series in CUCM (8.6) via Kurmi.

He asked me how was calculated the address mac ports of the VG. After send him the official answer of Cisco (that is on the online help of the cucm), I figured out that the mac address of a VG224's port was 13 characters longs, as this: '10_last_mac_characters_of_the_VG' + 'magic_number' + '2_digits_of_the_ port'.

My question is: how to guess the magic_number? Someone could confirm this algorithm:

if VG is 224 then

   magic_number = 4

if VG is 202 or 204 then

   magic_number = 0


   magic_number = 8

   no magic_number



EDIT: I made a mistake about VG248. For this, it's a normal 12 charcaters mac address based on las 10 charcaters of the VG + port number.

Everyone's tags (2)
New Member

Provisionning VG200 series via Kurmi software - How the guess th

Hi there,

And the answer was... in the VG202/204 documentation !!!

Ex: port 0/23

The last 3 digits of the voice port MAC address is the slot number

(3-bit) + subunit number (2-bit) + port number (7-bit) in hexadecimal

format. Combine the digits to get the last three MAC address digits

Slot / xxx -> 3 digits

Subunit / xx -> 2 digits

port / xxxxxxx -> 7 digits

e.g. voice-port 2/0 =

Slot 2 (010) -> 3 digits

Sub 0 (00) -> 2 digits

Port (0010111) -> 7 digitis

0100 0001 0111 = 417