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RYNGA at about 50c per min
Looking for a solution , business makes about R 5000 worth of cell phone calls . Looking for the cheapest solution ie Premicell , fnb , vox , etc etc
Switch Telecom - w.e.f. 1 March (i.e. a few days away), R1.20 (R1.05+VAT) per min on 60/30 billing, or, R1.48 (R1.30+VAT) per min on pure per-second billing.
NB. With Switch Telecom, all calls are routed through official interconnect, so Caller ID will be presented correctly and call quality is guaranteed. This is particularly important as you don't want people ignoring calls because they say "Private Number" or not getting back to you because they can't see who called.
Premicells are no longer worthwhile since mobile tariffs dropped. With a premicell you have to commit to at least R500 per month per line billing in advance and you'll pay more than the quoted rate for off-network calls. By comparison, with a VoIP solution, you can get multiple lines (avoiding overflow of calls to Telkom) with zero monthly call spend commitment and post-paid billing for only as much as you actually use. You may think you have the volume, but remember that months like December may be quieter than normal; too many premicells and you'll over-pay; too few and you won't get the full savings.
Also with VoIP, you will save to ALL MOBILE networks, not just the network providing the SIM card in your premicell, and, you will save not just on Mobile calls but on land-lines as well.
E.g. With Switch you'll save ~14% on local calls and ~34% on national calls (including 086 numbers).
NB. VoIP is on month-by-month contract; premicell is a 2-year contract.
Finally, keep in mind that with VoIP, if you have a 3G or iBurst or Neotel router on standby, you'll have a fully usable backup service (with both inbound and outbound) in the event of your Telkom lines going down. Just one quick fax to Telkom and they'll call forward your faulty lines to the VoIP number while you're waiting for a technician to repair the Telkom line.
I would be hesitant breaking out on a international proxy then routing back to ZA due to latency.
Betamax strike again, I use them for international calling, but find (or at least did when I last tried) that calling ZA tends to be a hit and miss story. We call Italy and the UK frequenty using one of their "companies", 12 voip I think at the moment. Works flawlessly.