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You get a an operator on Voice over internet protocol. IP phones with a bunch of buttons if you'll want to them (Cisco, Snom 360, and Grandstream 2000 all support sidecar modules). Calls can ring the operator and/or check out wherever you want based on whatever criteria (time, operator logged in, etc).

Asterisk supports MOH from mp3 files or other audio applications. You can change MOH classes per-channel, per-user, or per anything otherwise. Each MOH class is a folder with file(s) to it. You may make as many classes while want.

There's nothing worse than trying to setup an extension or have something not be successful with your phone system and have nobody to give you a hand when you into affect. Who are you going to call -- or email -- or line? Does your online phone service have 24/7 ability. You might even want to check and determine if they have answers to common questions in an easily-accessible place that you can try. Or, better yet, do they've got live chat?

For a backup, make use of a PRI (T1). Probably run this with a central place. Alternatively, you can get PRIs to local servers, and local calls would go out and incoming come in this way, with LD calls going out via Voice over internet protocol. Remember, VoIP PBX doesn't necessarily indicate VoIP services.

As above, you can super-centralize or you can spread by helping cover their smaller, local servers. Asterisk servers can trunk calls to various other via SIP or IAX2 (inter-Asterisk exchange) protocols. May get route calls based on extension range (2xxx is NYC, 3xxx is Boston, etc) merely by which server has it (Wiki for DUNDi). All the transport tend to be across selected network practitioner. Installing backup links is the same in principle as backup Internet links.

If you obtain arrested, your current property- as well as your cell phone- will utilized before are usually taken into the jail. That means, if you do not keep several phone numbers in your head, how will any of your friends or family find out that you happen to be arrested?

If an individual not in the office much and work demands which and employees are in the field then the iPhone is often a great tool for multitasking and how the album works have the 3G that can also take credit card payments with the right connection.