Feb 6, 2013

Tech Query: Dlink DIR-615 vs DIR-605L

saurabh kesharwani



Ques. I have a requirement of using my Airtel home broadband connection through a wi-fi router, and after going through all my internet research I have short-listed two products, viz., DIR-605L and DIR-615. And in spite of writing to sales@dlink.co.in, I have NOT received any response, since near to a week now. And even the customer care people are not having full information with them. So you are my last resort, please help me to choose between them.If you can answer my following questions
(simply copy an paste the whole matter and type your answer after each point, in the same sequence) it would be a great help:

1) My operating system is Windows XP service pack 2, is this compatible with both routers mentioned above (C-Net reviews mentioned service pack 3)? Please confirm.

2) Are both routers N-router (as in G-type or N-type)?

3)a. One specification mentioned in C-Net for DIR-615 is, 'Full Duplex Capability', what does this mean? 3)b. My room (where I'll be placing the router) is below the terrace, and alongside my room is a balcony, towards the roadside (and above is the terrace). I am expecting to get the wi-fi coverage on terrace as well. So (roughly speaking) is the feature 'Full Duplex Capability' usefull for this purpose?
3)c. Is this feature not available in DIR-605L?

4)a. For DIR-605L the antennas are 5dBi and for DIR-615 the antennas are 2 dBi; please confirm.
4)b. What does dBi mean? Is it like higher the better (in what terms)?

5) So finally, for my use in the floor above, 5dBi of DIR-605L would be better or 'Full Duplex Capability' of DIR-615 would perform well (give me a rough idea)?

Expecting a positive and helpfull reply,If there's a way I can directly call you, please let me know.Thanking you!Regards,Saurabh Kesharwani.

Ans. 1.Yes, the  internet will work fine on Window XP service pack 2 with both the routers. 
2. Yes both the routers are 802.11n and support speeds upto 300mbps.(But does your computer's network interface card support 802.11n?? To enjoy these speeds your computer should also support 802.11n!)
3(a) No
  (b).A half-duplex (HDX) system provides communication in both directions, but only one direction at a time (not simultaneously). A full-duplex (FDX), or sometimes double-duplex system, allows communication in both directions, and, unlike half-duplex, allows this to happen simultaneously. 
  (c)This feature is present in most new routers in the market including DIR-605L
4(a). Correct
(b).The decibel (dB) is a logarithmic unit that indicates the ratio of a physical quantity (usually power or intensity) relative to a specified or implied reference level. In this context it is the gain of the antennas. In electronics, gain is a measure of the ability of a circuit (often an amplifier) to increase the power or amplitude of a signal from the input to the output. 
Higher the gain of the antenna more will be its range. If the range of your wireless router is good then you will get good speeds at greater distances.
(5) DIR-605L would be a better choice because of its bigger sized and higher gain antennas which will give you a longer WiFi range.


  1. Anonymous1:09 AM


    Thank you! very much.

    You have explained my questions very well and that too in a detailed manner, which made me fully satisfied.

    I am happy to receive such a reply and in so much time efficient manner.

    Once again, thank you very much.

    -Saurabh Kesharwani

    1. TechTantrik.com always happy to help :)

    2. Dlink DIR 615 also have 5dBi antennas. Iam using it right now

  2. Anonymous1:11 AM

    ...you made me decide for my product, instantaneously! :-)

    -Saurabh Kesharwani

  3. Anonymous12:59 AM

    Hi! Shreevats,

    Regarding the wi-fi router D-Link DIR 605L (above), I was ordering it on-line right now and it clicked me that I almost forgot to ask you an important point. So I'm stuck again, and need your immediate rescue.

    As mentioned in Flipkart's website: WAN and LAN is RJ-45, which means an internet connection direct to p.c. (no voice/ modem). Correct me if this information is wrong.

    And I am using Airtel's broadband internet connection via a modem provided by them. This modem is "220BX ADSL2+Modem" from 'Beetel'. Which means my internet line is RJ-11, meaning an internet connection via modem (plus voice telephony). Correct me if this information as well is wrong.

    So can the DIR 605L work along with this modem? Or how will it be like?

    Please reply,

    Saurabh Kesharwani
    E-mail: saurabhkesharwani@rediffmail.com

    1. There definitely will be an empty RJ-45 port behind the beetel modem apart from the Rj-11 port. You will need to connect the telephone wire to the beetel modem and then from the RJ45 port of the modem connect the LAN wire to the rj45 port on your D-link router.You will need both the modem and the wifi router switched on and connectedto eac other to access the internet in this kind of setup. Else you could go for a DSL modem cum wifi router if you want just one device(like this tp-link adsl cum wifi router) to handle both the things.

  4. Anonymous9:30 PM

    Buddies you rock !!! whatever questions I had were lined up beautifully and answered with good insight, being an electronic engineer I appreciate the depth of the explanation.

    Thank you both !!!!

    Ramana Buddhavarupu

    1. Thank you, for such encouraging words, we really appreciate your feedback :)

  5. Anonymous9:10 PM

    What is QoS? Does dir-605l support it?

  6. If wifi router speed is more than computer speed then there is problem of connectivity occurs .

    1. Anonymous8:57 PM

      Which problems?

  7. Priyanshu5:08 AM

    can i access my camera videos which are connected to this modem on my mobile when
    a.)i am connected to the router.
    b.)i am away from the router.
    If yes what is the procedure for both.
    one more question what is the maximum distance at which i can place my camera and still be connected to the router.
    Please reply ASAP i need to purchase this in next 2-3 days.

  8. Anonymous7:13 PM

    Nice explanation ...thanks

  9. I recently happened to purchase Dlink DIR 605L N 300 ADSL cloud router but it so happened that I ran into the 615L version n was confused whether to return 605L n order 615L. Seeing reviews on amazon n flipkart I couldnt not come to conclusion. But your review finally helped me to decide to keep the 605L version. Thanks for explaining clearly.

  10. Thanks for explaining the points very clearly..
    I am sure others too would benefit from your views and take a right decision.

  11. Thanks for explaining the points very clearly..
    I am sure others too would benefit from your views and take a right decision.

  12. I have window 10.
    Can I use dir605L or dir615

  13. I have window 10.
    Can I use dir605L or dir615

  14. iam using dlink-DIR615. whenever i switch it off or when the power is down it asks me to signup and that's too irritating for me . so pls help me to rectify this