Can I change SIP port?
Can I use my own SIP server name?
How many concurrent calls can be supported?
Why one-way audio or no-way audio problem?
Can I dial outside numbers directly?
Can I change default outgroup prefix '9' to another one?
Can I route the prefix '9' to local extensions?
Can I route calls to different external lines by dialing different prefixes?
What's about the rate to call xxx, such as to call U.S?
I forget my password, what shoud I do?
Can I delete my account and virtual server?
Why my virtual server is gone?
Can not find answer here? Please take a try to seach in