[Asterisk-Users] Multiple outgoing calls through VOIP providers

[David Josephson]

Trying to get some straight info from the VOIP providers is difficult. 
Say there's a small Asterisk switch and it's registered with Broadvoice 
or LiveVOIP or someone. There are a couple of people using the switch, 
one is on an outgoing call with the VOIP provider. What happens when 
someone else initiates another outgoing call through that provider on 
the same SIP registry? Does * know that the SIP account is busy or does 
it dial out anyway? Does the provider care? Do I establish a call group 
of SIP accounts like I would of Zap trunks and Dial/g1 ?