What is it?

i don´t know what does “SIP/172-082c5a80” mean?
how i can set this parameter:

i´m in Executing BackGround(“Zap/2-1”, “to-log-in-to-voice-mail”)
and i want Executing BackGround(“SIP/172-082c5a80”, “to-log-in-to-voice-mail”)
what is the command or the way to change “Zap/2-1” to “SIP/172-082c5a80”

Anyone knows please help me.

you may want to really express what your problem is - and someone may be able to help you. What you have written here makes absolutely no sense. What is wrong, do you need help on or is broken?