telemdefault = 0
My suggestions for a hub:
duplex = 0 ; 0 = Half duplex with no telemetry tones or hang time. Ah, but Allison STILL talks!
hangtime = 0 ; squelch tail hang time 0
althangtime = 0 ; longer squelch tail hang time 0
holdofftelem = 1 ; Hold off all telemetry when signal is present on receiver or from connected nodes
; except when an ID needs to be done and there is a signal coming from a connected node.
telemdefault = 0 ; 0 = telemetry output off
telemdynamic = 0 ; 0 = disallow users to change the local telemetry setting with a COP command,
linktolink = no ; disables forcing physical half-duplex operation of main repeater while
; still keeping half-duplex semantics (optional)
nounkeyct = 1 ; Set to a 1 to eliminate courtesy tones and associated delays.
; idrecording = |ie ; id recording or morse string see http://ohnosec.org/drupal/node/87
; idtalkover = |ie ; Talkover ID (optional) default is none see http://ohnosec.org/drupal/node/129