Among the new features it will offer is "shake to lock," which allows a user to end a call with a simple shaking gesture of the phone, he said. Another, named "call preservation," allows a phone call to stay connected, even if a user opens a different application in the iPhone. Philonenko spoke to reporters in Boston and other cities from San Jose, Calif. CDW, which has 3, customer deployments of Cisco's mobile and unified communications technology globally, has already worked with one manufacturing company that has implemented voice over Wi-Fi using Nokia smartphones and Cisco IP phones, Scheckel said.
Philonenko said it is important for Cisco to bring its mobility apps to iPhone, which has gained ground in large businesses in the past two years. Cisco eventually plans to bring all of its mobility applications to Nokia and BlackBerry devices, and, later, Android phones, he said.
With smartphone devices proliferating, cell networks seem to have saturated the globe, "but there's still not enough 3G bandwidth for what people want to do. Is there an easy solution for making phone calls despite poor indoor cellular coverage? The answer is Yes! You can do all of the above using a new solution adopted by service providers and cell phone vendors known as Wi-Fi calling.
The most compelling aspect of the solution is its non-intrusive nature. Services providers are embracing Wi-Fi calling throughout the world. Use the configuration tool to isolate configuration criteria for the deployment when using the xG Series wireless IP phones.
Discussed later in this chapter. Note The audit results are based on the user configured criteria in the audit tool itself. If the criteria configured does not already adhere to Cisco documented VoWLAN best practices, you should configure the criteria in the audit tool to match accordingly. This will ensure the configuration adheres to the appropriate best practices.
This is the most ideal tool for analyzing configuration requirements. Is QoS implemented end to end? Perform RF Analysis and ensure that uplink packets are queued correctly. Is RRM enabled? Did the customer implement transmit power throttling to define a Min and Max transmit power?
It also defines best practices and additional options that may need to be taken into consideration. Verify an AP can be seen from the phone at dBm or better in all areas to be covered.
You also need to verify that the AP sees the phone at dBm or better in all areas as well. Ensure that the SNR is always 25 dB or higher in all areas to provide coverage. If using Verify coverage is designed for 24 Mbps to maximize throughput. Optionally disable Mbps. Verify that the radio of the AP has multiple antennas and that diversity is enabled. Ensure controllers are configured for Symmetric Mobility if phones will be roaming between controllers.
Validate the virtual interface address is the same across all controllers in the same mobility group. Validate that the mobility status shows as UP between all controllers in the same mobility group.
The configuration analyzer is located on CCO under the download section for wireless software. Step 5 The tool will open a window that allows you to browse to a stored configuration file. For the purposes of this troubleshooting guide, we will show what to look for in a sniffer trace or a wireless debug from the controller to isolate root cause for each problem or scenario provided.
As a general suggestion, we often recommend that customers perform the following directions to gather additional data about the problem.
This will ensure that the time stamps listed in sniffer captures are consistent with controller debugs and logs gathered from the controller. Step 2 Capture a wired sniffer trace on the trunk link or port channel between the distribution switch and the Wireless LAN Controller.
This is an example of how to configure a SPAN port on the Port-Channel2 interface of a Cisco IOS switch to capture wired traffic in both directions between the controller and the switch.
The output of traffic traversing the Port Channel will then be sent to a destination interface where a laptop running a protocol capture utility such as Wireshark will gather the protocol data for analysis. Figure Configuring an interface to monitor and capture wired traffic to a sniffer. Step 3 For troubleshooting wireless traffic on the 2. This adapter captures wireless traffic on all three non-overlapping channels 1, 6 and 11 and aggregates the data into a single file. For wireless troubleshooting on the 5 GHz frequency band, we suggest that you use one laptop per channel and use the tshark utility compiled in Wireshark or Omnipeek tools to combine both sniffer captures into a single file for review and analysis.
For the purposes of this document, we will focus on troubleshooting as it pertains to deployments using the xG Series wireless IP phones. Turn on suggestions. Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. Showing results for. Search instead for. Did you mean:. All Community This category This board. Voice over Wireless LAN.
With Shankar Ramanathan. Back Previous Next. Latest Contents. Created by Wes Schochet on AM. Looking to implement the same functionality on the
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