Difference Between Naked DSL (ADSL2+) and ADSL2+

裸DSL（ADSL2+）vs adsl2+

Naked DSL or ADSL2+ and ADSL2+ are broadband access technologies that are used to deliver high speed internet access. Naked ADSL2+ will not come with a PSTN whereas ADSL2+ comes with a PSTN line. So in ADSL2+ you need to pay for additional line rental on top of the internet access payment whereas in Naked ADSL2+ you don’t need to pay line rental. There are some advantages and disadvantages on both. You can select either ADSL2+ or Naked ADSL2+ depending on your requirements.

ADSL2+

ADSL2+ is the next generation ADSL technology to offer high bandwidth using the same copper lines.ADSL2+ can offer up to 24 Mbps but which depends on many parameters. ADSL2+ was introduced in 2003 and it’s an ITU standard g992.5.

ADSL2+ uses twice the frequency band of ADSL2 (2.2MHz) thus download data rates is possible around 24 Mbps. ADSL2+ upload speed remains as 1Mbps.

In short, ADSL2+ is better than ADSL2 or ADSL in access speed but which doesn’t mean you can browse internet faster in ADSL2+ than ADSL2 or ADSL. There are many other parameters (这里更多详细信息）会影响速度或吞吐量。

Naked DSL or Naked ADSL2+

裸体ADSL也来自同一ADSL家族，但主要区别是，它没有PSTN电话线。这并不意味着它不会出现在铜线中，而是通过您的铜对出现。它还提供与ADSL2+速度，24Mbps Uplink和1Mbps下行链路相同的。

在ADSL2+中，在连接到ADSL2+路由器和电话之前，您需要在端（用户端）分开（用户端）。裸aDSL2+不需要分离器

Naked ADSL2+ provisioned with all IP digital modes in ADSL2+ Annex I or Annex J (for POTS and PSTN) can offer additional 256 kbps on uplink since we don’t use the low bandwidth for PSTN voice.

Naked ADSL2+ is generally bundled with VoIP services and you may get a local phone number assigned to you via Voice over IP services. Which is referred as Local DID. (Direct Inward Dial) On top of ADSL2+ router you may get a VoIP device or ADSL2+ router it self comes with VoIP built-in functionality where you will get RJ11 (normal) phone output. You can plug your normal home phone into that port and get the dial tone.

The whole phone system work via Voice over IP protocol and these days there are very cheap packages available in the market. Either you can get the service from your Naked ADSL2+ provider or you can buy number from anyone else and configure. There are plans for 10 dollars to make unlimited minutes to anywhere in the world (Except certain countries and mobiles).

Difference Between ADSL2+ and Naked ADSL2+ (1) ADSL2+ comes with a Telephone line and Naked ADSL2+ will not come with a POTS telephone line. (2) So you don’t need to Pay line rental for Naked ADSL2+ whereas you need to pay line rental for ADSL2+ （3）ADSL2+与POTS或PSTN电话线绑定，而Naked ADSL2+可能与VoIP电话线结合，VoIP电话线可能有很好的通话计划，可以在世界任何地方拨打电话，以获取包括您当地城市和国家在内的较低价格。 (4) Generally you can’t use your Naked ADSL2+ phone line to Fax, EFPOS, Credit Card access devices towards banks, 56 K modem, back to base alarm systems and any other PSTN based services. (5) If your Naked ADSL2+ VoIP device comes separately, you can carry that when you travel and plug into an internet connection then you start receiving your local calls in any part of the world which you can’t do it with your normal PSTN phone. （6）在ADSL2+中，您可以从一位提供商和另一个提供商的电话服务中订阅ADSL服务，因此，即使电话线不起作用，您的Internet可能会工作，反之亦然，而在naked ADSL2+中，如果Internet不起作用的电话线路会将也不起作用。

General Summary:

Comparatively Naked ADSL2+ have better data plans and VoIP plans but still people have the mentality to have one PSTN traditional telephone. There for they go with ADSL2+ rather than Naked ADSL2+. It will take time for people to change their mentality towards IP services until it hits the comparative price. Number portability is less possible with Naked ADSL2+ phone numbers (DID). When you go for Naked ADSL2+ less likely you can bring your existing phone number to Naked ADSL2+ phone.