I want to setup a wireless network with 3 deskops and atleast 2 laptot

Yes, it supports Layer 3 multicast networking, also supports IPv4 PIM SSM.

Protocol Independent Multicast-Source-Specific Multicast (PIM-SSM) enables a user host to rapidly join a multicast group if the user knows a multicast source address. PIM-SSM sets up a shortest path tree (SPT) from a multicast source to a multicast group, while PIM-SM uses rendezvous points (RPs) to set rendezvous point trees (RPTs). Therefore, PIM-SSM implements a more rapid join function than PIM-SM.


Different from the any-source multicast (ASM) model, the SSM model does not need to maintain an RP, construct an RPT, or register a multicast source.


The SSM model is based on PIM-SM and IGMPv3. The procedure for setting up a multicast forwarding tree on a PIM-SSM network is similar to the procedure for setting up an SPT on a PIM-SM network. The receiver's DR, which knows the multicast source address, sends Join messages directly to the source so that multicast data streams can be sent to the receiver's designated router (DR).
http://www.thunder-link.com/HUAWEI-MA5800-X7_p928.html

According to my experience and knoledge: the Cisco 2900 and 3900 series platforms have collaboration feature parity with the Cisco 2800 and 3800 Series platforms, so all of the following collaboration capabilities and solutions are present:
• Cisco Unified Survivable Remote Site Telephony (SRST)
• Cisco Unified Border Element
• Time-division multiplexing public-switched-telephone-network (TDM PSTN) and private-branch-exchange (PBX) gateways
• VoiceXML contact-center gateways
• Cisco Unified Communications Manager (UCM) media resources (allowing conferencing, transcoding, and Media Termination Point [MTP])
• Resource Reservation Protocol (RSVP) Agent
• Cisco Unified Communications Manager Express (CME)
• Cisco Unified SIP Proxy
• Gatekeeper

Cisco 3900 Series Routers

Print the network settings page to identify if your printer is connected to your wireless network:

1. Press Setup on the printer operator panel.

2. Press the right or left arrow button until Network Setup is displayed, press OK.

3. Press OK at Print Setup Page.

4. Press OK when prompted to Load Paper.

5. Press OK. The network settings page will now print.

Check the Network Card Status, SSID, Trouble Code, TCP/IP Address. SSID should be the name of your wireless network. Otherwise, you may need to reset the printer's wireless network settings.

How to reset network settings:

1. Press Setup.

2. Press the right or left arrow button until Network Setup is displayed, press OK.

3. Press the right or left arrow button until Reset Network Adapter Defaults is displayed, press OK.

4. Press the right or left arrow button to display Yes, pressOK.

Once the Wi-Fi light turns on to solid orange, run the Lexmark Wireless Setup Assistant on your Mac.

Obtain the IP address of your printer. Go to Setup > Network Settings > Confirm Settings If it starts with 192, that's good. If it's 169 or 0, do the ff : --- 1. Reset the Network settings. Go to Setup > Restore Default Settings > Network Settings 2. Run the Wireless LAN Setup. Go to Setup > Network Settings > Wireless LAN Setup 3. Make sure you can see your network name or SSID which is provided by the router manufacturer. 4. Enter your network key and enter it as it is (CaSe sensitive). 5. Obtain the IP address. Make sure it starts with 192. 6. Now run the software on your computer and add the printer.

Factors that Affect Voice Quality

• Audio Compression Algorithm
  Speech signals are sampled, quantized and compressed before they are packeted and transmitted to the other end. For IP Telephony, speech signals are usually sampled at 8000 samples per second with 12-16 bits per sample. The compression algorithm plays a large role in determining the Voice Quality of the reconstructed speech signal at the other end. The SPA supports the most popular audio compression algorithms for IP Telephony: G.711 a-law and µ-law, G.726, G.729a and G.723.1. The encoder and decoder pair in a compression algorithm is known as a codec. The compression ratio of a codec is expressed in terms of the bit rate of the compressed speech. The lower the bit rate, the smaller the bandwidth required to transmit the audio packets. Voice Quality is usually lower with lower bit rate. However, Voice Quality is usually higher as the complexity of the codec gets higher at the same bit rate.
  
• Silence Suppression
  The SPA applies silence suppression so that silence packets are not sent to the other end in order to conserve more transmission bandwidth. Instead, a noise level measurement can be sent periodically during silence suppressed intervals so that the other end can generate artificial comfort noise that mimics the noise at the other end using a CNG or comfort noise generator.
  
• Packet Loss
  Audio packets are transported by UDP which does not guarantee the delivery of the packets. Packets may be lost or contain errors which can lead to audio sample drop-outs and distortions and lowers the perceived Voice Quality. The SPA applies an error concealment algorithm to alleviate the effect of packet loss.
  
• Network Jitter
  The IP network can induce varying delay of the received packets. The RTP receiver in the SPA keeps a reserve of samples in order to absorb the Network Jitter, instead of playing out all the samples as soon as they arrive. This reserve is known as a Jitter Buffer. The bigger the Jitter Buffer, the more jitter it can absorb and the bigger the delay it can introduce. Therefore the jitter buffer size should be kept to a relatively small size whenever possible. If jitter buffer size is too small, then many late packets may be considered as lost and thus lowers the Voice Quality. The SPA can dynamically adjust the size of the jitter buffer according to the network conditions that exist during a call.
  
• Echo
  Impedance mismatch between the telephone and the IP Telephony gateway phone port can lead to near-end echo. The SPA has a near end echo canceller with at least 8 ms tail length to compensate for impedance match. The SPA also implements an echo suppressor with comfort noise generator (CNG) so that any residual echo will not be noticeable.
  
• Hardware Noise
  Certain levels of noise can be coupled into the conversational audio signals due to the hardware design. The source can be ambient noise or 60Hz noise from the power adaptor. The SPA hardware design minimizes noise coupling.
  
• End-to-End Delay
  End-to-end delay does not affect Voice Quality directly but is an important factor in determining whether subscribers can interact normally in a conversation taking place over an IP network. Reasonable delay figure should be about 50-100ms. End-to-end delay larger than 300ms is unacceptable to most callers. The SPA supports end-to-end delays well within acceptable thresholds.