SIP simply requires each user’s device to be equipped with SIP compliant software, whereas VoIP depends extensively on network connections, filtering and channel assignments being handled centrally. To an extent, VoIP still has some of the restrictions inherent in PSTN – you must have enough channels to avoid bottlenecks at peak times, even though most of the time you won’t be using them.
Although the virtual trunks of SIP superficially those of PSTN (for example each trunk has 24 lines) bottlenecks aren’t the same issue for SIP. You only pay for the trunk malaysia telegram lines you use, so when demand increases you use more, but when it subsides you pay for less.
The cost savings over traditional phone lines are usually between 10% and 60% for most organisations. Heavier users save the most.
Centralisation
Your business may no longer need to invest in national 0800 numbers. Instead, you can set up local numbers at your busiest geographical locations, but still route all your calls to central locations with no capital investment because there is no additional hardware.
Reliability
SIP trunking can be pre-configured to determine how to cope with emergency eventualities such as power or telecom outages. Calls will then re-route automatically to mobiles or alternative offices, and your customers need never know you had an issue.
Security
With the increase in cyber crime and information legislation, some have concerns about the security of internet telecommunications. In fact, SIP offers better protection than PSTN. Tapping an ordinary phone line is, literally, child’s play. Simple devices at any point along phone cables can divert or record everything that passes through them. At one time you could bypass operators by whistling down the phone!
In contrast, SIP is routinely protected by network firewalls, IP filtering, encryption, number barring, login access, network security alerts, PBX security extras, line monitoring, detailed logging, and a variety of bespoke call restrictions.
Why not contact the experts at IDT today for further information on exploiting SIP.
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