15 Jul 2011. The half life of Metoprolol is between 3 and 7 hours. This is the time it takes for the drug levels in your plasma to reduce by half. For a drug to be totally eliminated from your system it takes around 5.5 times the half life. As an estimate then, after taking a dose of Metoprolol it should be out of your system within 16.5 to 38.5 hours.
The Quick and Easy VOIP System Cost Calculator. Relatively speaking, a VOIP system will cost between $500 and $1,000 per phone when all of the components and pieces are factored in. It is a very basic rule of thumb, and you can very well fall below that mark, or above it, depending on the complexities and size of your VOIP phone system. My Last Tid-Bit of Advice.
There will be a monthly service fee. Also, VoIP small business phone systems will have a higher initial cost per user than a large enterprise. Still, you are likely to see cost savings in the long run as you will be paying less for administrative services, long distance calls, and interoffice calls. A refurbished Cisco UC520 Unified Communications small business phone system costs around $8,000 (note: this cost is for the unit only). 2  This system supports up to 48 users and provides voicemail, automated attendant, call center capability, music on hold, and more.