Instruction: Generate an answer to the question by utilizing the information contained in the document.

Input:
Question: Do this cameras have a microphone? Can you hear audio via the iPhone app?
Document: I bought this system from Costco. It took no time to hook up the basic setup (i.e., ethernet cable, cameras, etc.). The challenge came when I want to setup other nice features like e-mail notification, remote monitoring via IOS/Android app, web browser. I am a fairly savvy tech person who often maintain my home network and router. Yet, I found the instruction manual somewhat confusing. It gave some examples on how to set up virtual servers in a router, yet it was not very explicit about setting up the servers for all ports (e.g., 2540 - 2544).
If I wanted to spend more money, I could have had perhaps found the "perfect" solution, but it would have been much more expensive. I've bought AXIS HD cameras for my work environment and obviously these HD cameras produce a much better image, but they also come with a premium price too. For example, I have experience with the AXIS M3204 cameras, but two of these cameras are nearly the same as this entire Samsung solution.I'm really happy with this system. The iPhone app is one of the best aspects because I can always remotely check in at the house.
I've had my system for a year and a half. I got some $10 housings for the outdoor units, so no water or corrosion issues. I did attempt a software version upgrade just before the warranty expired. On the upgrade final reboot it "hung". If this happens you need to return it to Samsung to have the O/S flashed on the DVR. Samsung took care of this promptly. All my custom settings were still there. Good engineering, -they are kept on the hard drive.Samsung has developed an iPhone application (iPolis) that allows you to monitor your camera feeds from anywhere on your phone via your internet (DSL, cable) service.
We both can use the app, but only one person can access the video feed at one time. If I log into the app and she is viewing it, it gives me a warning that the admin account is currently in use and asks whether I want to proceed or not. If I proceed, then it stops the video stream to her phone and my phone will start viewing the video feed. This same behavior occurs when remotely accessing feed via browser too (next section). The bottom line, is that the unit can only support one remote connection at one time.
This isn't a problem for us.~~~~~~~~~~~~~~IE access~~~~~~~~~~~~~~Once you register your device at the iPOLIS website, in addition to use the smartphone app, you can remotely access your system via any Internet connection via the Internet Explorer web browser. Surprisingly, in addition to the video feeds, you can remotely reconfigure your device too. Nearly all of the options are available via this UI. This is really nice because there are a few times that I've wanted to make a change and I could do that outside of my home (note: the smartphone app is exclusively focused on video feed access, while IE gives you "setup" access too).
I've got iPad, iPhone, and Android (Gingerbread) apps all running. When you configure the app, it's not really intuitive, but just select "DVR" as the type of device, and once it connects, the exact model SDE-5001N will auto-populate in the settings.4. The dome camera has a plastic screen. Don't expose this to rain even though it's weather-resistant. One of mine got rain run-off from the roof, and whatever chemicals got brought along by the run-off ended up etching splotches into the dome.
After you have completed all four of these pages, then you can go back to the "SMTP" tab and click the "Test" button to see if it works. Also, you can unplug a camera cable to ensure that you get your "video loss" alert. In addition to using an email address, you can also enter in the SMS address for your phone (ex. 10-digit-TN@vtext.com for Verizon Wireless cell phones).~~~~~~~~~~~~~~iPOLIS/smartphone app~~~~~~~~~~~~~~Reference: my phone is running version 2.2.2 although iPhone app store lists 2.2.1 as the current version.Here is some information that may help getting this working for you.
4 cameras out of 8 that come with the system are crappy plastic SED-1001R that look like PZT (Pan Zoom Tilt), but are NOT PZT.2. PZT Camera is not supported by this system.3. Both models of the cameras bundled with the system do not support sound. Need to buy extra mikes or add more expensive cameras if you want audio. This info is buried somewhere in the thick manual. No mention of that on the box or in the specs. What a bait and rip off!4.
We bought this system from Costco back in April 2012. Power over ethernet (PoE) is exactly what I was looking for, and to have a name brand supply a 16 channel system with 8 cameras for $949 seemed too good to be true. I ended up purchasing an additional 2 SEB-1006R cameras (with audio) from Amazon, but I have had problems with audio on both of those (one is super quiet, and the other has a defective amplifier, as diagnosed by Samsung). I will exchange these and be back in business.Cameras are super clear during the day.
So, I went for it and happy to report that I had no problems this past winter -- even on the coldest days where we had overnight temperatures well below zero. Plus, this past winter were experienced the "Polar Vortex" which really tested the system. In summary, all is still well with the DVR, smartphone app, and cameras.
Answer: No there is no audio provided. You can add a microphone but there is only 1 audio input not one for each camera.