Voice over wireless calc

Can someone give one example about calculation
parameters for use voice over wireless ?
Is this equal to voip over ethernet or not

Sorry for imprecise question ?
My question is for WAN link between two sites, not
local telephony ? How to treat this for calculation as voip on Ethernet, voip on ppp, or what ? Are there any differences in calculating overhead over
wirelles wan link ?

Similar Messages

Voice over Wireless with Cisco phones 7921 and 7925

Hello experts,
I made an wireless audit for a company.
They have 2 WLCs 5508 in HA mode, with APs 2602 for indoor and 1552. Version of the WLC : 7.6.120.0
At the end of the day we noticed that the roaming between indoor and outdoor access points is sometimes failing and results to a complete disconnection of the wireless phone (7921 or 7925) from the network. When people go from the indoor to the outdoor area, there is no problem. The problem comes when people are coming from the outdoor to the indoor.
Also, on the WLC, the power lvl of the outdoor APs are set to 1 ... Is it good or not ?
My question is, is there any known issue about Voice over wireless with WLC 5508-7.6.120.0 with APs 2602 and 1552 ?
Maybe it should be better to upgrade to 7.6.130.0 ?
Thanks in advance,
Alexis

Normally yes.
Is there a way to troubleshoot what's going on with the phones ? Maybe a "show client detail MAC address* on the WLC ?
Here are some logs when the phones are losing the network :
*Dot1x_NW_MsgTask_4: Apr 09 12:44:21.320: #DOT1X-3-INVALID_WPA_KEY_MSG_STATE: 1x_eapkey.c:957 Received invalid EAPOL-key M2 msg in START state - invalid secure bit; KeyLen 40, Key type 1, client 00:24:d7:83:56:dc
*apfMsConnTask_6: Apr 09 12:28:32.668: #APF-3-VALIDATE_CCKM_REASS_REQ_ELEMENT: apf_utils.c:2506 Could not validate the CCKM Reassociation request element.Received Timestamp deviation > 1sec in CCKM Info Element from mobile. Mobile:4c:00:82:85:6e:e1, AP:1
*Dot1x_NW_MsgTask_1: Apr 09 12:26:53.964: #DOT1X-3-INVALID_REPLAY_CTR: 1x_eapkey.c:445 Invalid replay counter from client 74:26:ac:63:8c:a9 - got 00 00 00 00 00 00 00 03, expected 00 00 00 00 00 00 00 04
*Dot1x_NW_MsgTask_1: Apr 09 12:26:53.929: #DOT1X-3-INVALID_REPLAY_CTR: 1x_eapkey.c:445 Invalid replay counter from client 74:26:ac:63:8c:a9 - got 00 00 00 00 00 00 00 02, expected 00 00 00 00 00 00 00 04
*apfMsConnTask_4: Apr 09 12:24:34.959: #APF-3-VALIDATE_CCKM_REASS_REQ_ELEMENT: apf_utils.c:2506 Could not validate the CCKM Reassociation request element.Received Timestamp deviation > 1sec in CCKM Info Element from mobile. Mobile:78:da:6e:f6:5f:89, AP:5
*Dot1x_NW_MsgTask_0: Apr 09 12:22:30.217: #DOT1X-3-INVALID_REPLAY_CTR: 1x_eapkey.c:445 Invalid replay counter from client 4c:00:82:85:1d:68 - got 00 00 00 00 00 00 00 03, expected 00 00 00 00 00 00 00 04
*Dot1x_NW_MsgTask_4: Apr 09 12:22:30.206: #DOT1X-3-INVALID_REPLAY_CTR: 1x_eapkey.c:445 Invalid replay counter from client 4c:00:82:85:b3:ac - got 00 00 00 00 00 00 00 03, expected 00 00 00 00 00 00 00 04
*Dot1x_NW_MsgTask_4: Apr 09 12:22:30.186: #DOT1X-3-INVALID_REPLAY_CTR: 1x_eapkey.c:445 Invalid replay counter from client 4c:00:82:85:b3:ac - got 00 00 00 00 00 00 00 02, expected 00 00 00 00 00 00 00 04
*Dot1x_NW_MsgTask_0: Apr 09 12:22:30.167: #DOT1X-3-INVALID_REPLAY_CTR: 1x_eapkey.c:445 Invalid replay counter from client 4c:00:82:85:1d:68 - got 00 00 00 00 00 00 00 02, expected 00 00 00 00 00 00 00 04
*Dot1x_NW_MsgTask_6: Apr 09 12:22:29.672: #DOT1X-3-INVALID_REPLAY_CTR: 1x_eapkey.c:445 Invalid replay counter from client 78:da:6e:f6:14:2e - got 00 00 00 00 00 00 00 03, expected 00 00 00 00 00 00 00 04
*Dot1x_NW_MsgTask_6: Apr 09 12:22:29.638: #DOT1X-3-INVALID_REPLAY_CTR: 1x_eapkey.c:445 Invalid replay counter from client 78:da:6e:f6:14:2e - got 00 00 00 00 00 00 00 02, expected 00 00 00 00 00 00 00 04
*apfMsConnTask_3: Apr 09 12:19:22.098: #APF-3-VALIDATE_CCKM_REASS_REQ_ELEMENT: apf_utils.c:2506 Could not validate the CCKM Reassociation request element.Received Timestamp deviation > 1sec in CCKM Info Element from mobile. Mobile:4c:00:82:85:6e:e1, AP:5
*osapiBsnTimer: Apr 09 12:13:36.031: #LOG-3-Q_IND: spam_lrad.c:53542 The system is unable to find WLAN 2 to be deleted

Voice over Wireless

Hello,
I wanted to know whether Cisco Supports voice over wireless.
Thanks.

Voice-over-IP across an 802.11b network comes in three and a half forms: [comments welcome on other forms]
1. VoIP across a point-to-point (bridge-to-bridge) link
2. VoIP using a wireless client connecting through an H.323 gateway
3. VoIP using a wireless client without H.323
3.5 Voice over an AP to a proprietary gateway from Symbol or SpectraLink.
We are working on both #2 and #3 right now. Cisco likes a product from IPblue that runs on Windows or PocketPC and works with Cisco CallManager.
There are several reasons why we also like a non-H.323 solution from TeleSym - implementation may be less expensive (depending on your scenario) and it can off-load a lot of traffic from the PBX.
Symbol and SpectraLink are expensive but simple. Their phones are just phones, rather than having the additional PDA features we get in scenarios #2 and #3.
We can walk through this in more detail if you need.
Matthew Wheeler
Blue Modal

Wireless voice over wireless network?

I am looking for any info on available or coming products that offer wireless phone/radio voice capability over 802.11b or other wireless networks. Basically a modern and cost effective alternative for an in-house radio network based on the LAN infrastructure. I just started checking into this so please clue me in.

As you might have seen in a recent Symbol press release(http://www.symbol.com/news/pressreleases/press_releases_miscpr_cisco.html) the NetVision DS Phone is the first 802.11b wireless mobile device ever to receive AVVID verification for resale by Cisco resellers, thus expanding the breadth of product and service offerings for Cisco AVVID IP Telelphony Specialists.

Voice over Wireless Outdoors?

Has anyone deployed outdoor VoWiFi?
I am charged with studying the feasability of an outdoor wireless voice solution for a large outdoor courtyard between several buildings.
The layout of the campus would require a mesh network. I would most likely use the new 1532I outdoor access points.
I am of the assumption that the phones would opperate on 2.4 Ghz and the APs would backhaul the data on 5Ghz?
In all likelihood, I could probably get it to work, but how well?
Would a deployment scenario such as this even be advisable to attempt?

Hey Philip,
VoWLAN for MESH is not recomeneded by Cisco for the following reasons:
- Mesh is less stable than the other AP modes like local
- Mesh will force the clients to use 2.4 GHz (unless for some very rare situations)
- Voice is not recommended for 2.4 GHz and all Cisco guides asks to use 5 GHz
- This scenario is not supported by the Cisco TAC
Cheers,
Nour

Voice over IP Roaming problems between 2 Wireless Lan Controllers.

Hello,
we have problems with Voice over IP roaming between 2 Wireless Lan Controllers, this problem is not always happening. I have attached the detailed configuration. We are using LWAPP 1242 & WLC 2106 Controllers.
The phones they are using are Siemens Enterprise optiPoint WL2.
Is there maybe something wrong with the configuration our can I try some different settings?
Regards,
Jordy Broekhuizen

When a wireless client associates and authenticates to a WLC, it places an entry for that client in its client database. This entry includes the MAC and IP addresses of the client, security context and associations, quality of service (QoS) contexts, the WLAN, and the associated LAP. When a client roams to another LAP associated to the same WLC, it just updates the client database with the new LAP information so that the data can be forwarded appropriately to the client. When a client roams to a LAP associated with a different WLC, either in same or different subnets, it sends the information in the client database to the new WLC. This helps client to retain its IP address across roams and maintain uninterrupted TCP sessions. For more information on roaming in the WLC environment.
For the further description following URL for the WLC may help you
http://www.cisco.com/en/US/docs/wireless/controller/5.1/configuration/guide/c51ovrv.html

Mac Book Air, cannot exit Voice Over at initial start up

New Mac Book Air; initial power-up; selected English language; 'Welcome' screen defaults to 'United States'; cannot manually 'Continue' to register and set up; 'esc' results in starting the Voice Over tutorial; 'Command+F5' results in seeing/hearing 'Voice Over off'...can't get past this 'loop'.
Ideas???

I think your issue here is the combo of Lion on the air and the TC on latest firmware.
There is a longish thread here exploring the problem. Start from the end and work backwards.. as we become more intelligent as we try different solutions.
https://discussions.apple.com/thread/3526741?tstart=0
But you should ring apple support and get them working on it.. perhaps they already know of it and have a work around.. this is definitely a bug and lack of adequate testing to leave you in this situation.
I would say if you need to work through it yourself.. go back to 7.5.2 firmware if you are on 7.6.. just hold down the options key when you go to the top menu upload firmware, and the older versions will be listed.
Try with that, if not enough we might think through some more..
Your issue maybe more serious as most people are not losing internet just connection to the AFP share of the hard disk. Do you have another computer to plug into the TC by cable and see if you can check the logs and the TC wireless clients info?

How do you folks handle Voice Over in Cinal Cut Pro 2

I am about to commence on documentary project that will entail extensive amounts of voice over. I do have and use Logic Studio 8, but am not anticipating having to use logic for this purpose. I would much rather do it all in FCP2. This will be at least one hour long format (not a .30 second commercial).
Thanks in advance.

For those of us who can't afford the professional narrator et al, but still don't like the computer noise that creeps in with the voice over tool, I use a different method.
If I have someone coming in to do narration, I turn all the equipment in the room off, unplug the phones, etc. and wire them with a Samson UHF wireless lav. I hook the receiver to my old Sony TRV-900, and have them record the audio track to miniDV tape.
It's easy to import into FCP, the quality is pretty good, and nice and dry if I want to add effects later; and, I have a backup copy on tape in case of emergencies.

Inherited Linksys Voice over IP and data installation.

I have just inherited a brand new linksys, voice over ip data installation. It has roughly 25 telephones and the same number of computers with new WMP300N network cards and SPA941 IP telephones. The company remodeled an old construction with 100% masonry wall (brick and/or concrete). The remodeling included the 100% wireless data and telephone installation. Now that the remodeling is finished and work has started, the network saturates as soon as there are a few users. The computers are all using LinkSys WMP300N cards and the telephones are all LinkSys SPA941. They installed approx 15 wifi repeaters for telephones and 10 for datos. They installed two separate but identical AP's, one for Data and the other for Voice but both on a 192.168.1/24 subnet.(Zonet ZSR1124WE) The folks who installed this didn't, for some reason, use LinkSys AP's and repeaters but used Zonet ZSR1124WE for all.
My questions are:
1. Wouldn't using the same subnet be the same and using the same
wire that that would allow voice/telephones to saturate and
slow down the data even though the AP's are separate?
2. Wouldn't channel interference between the aprox 25
repeaters be common?
3. If I were to remove all their equipment (APs and repeaters.)
an install 2 LynkSys AP's in the center of the offices
where there is an open patio with a watt or better amplifier
(not illegal here, not in the U.S.) output and a high gain
antenna on each of the two and using separate networks.
172.16.1/24 for datos and leave 192.168.1/24 for telephones
have a chance at success and if so could you estimate
how much of a change and recommend equipment and/or other
critical or semi-critical points that I have missed?
Thanks,
ed
P.S. I have my doubts that this is even possible but it would be cool, if it only worked

Umm.. you left out quite a bit of information:
How are the wired phones connected to the wireless network?
What channels do the APs use and how are they connected in between each other (and other wired data equipment)?
What kind of network is it? B, G, N?
How many WLAN channels are used? One per AP and all repeaters use the channel of the AP they repeat for?
As far as the subnet goes, the current setup shouldn't be a problem - I figure the problems are more likely to come from the wireless than the wired part of your network. Considering that you're basically halfing the throughput with each repeater (assuming the same channel which is likely since there are only 3 that do not interfere unless you have an A network) - the sheer number of repeaters is most likely to be blamed for the poor performance. Traditional WLAN networks generally use a wired backbone, plus you'd have a single net and use one of the three distinct channels in order to minimize interference.
Increasing the output of the main antenna is also only half of the problem... if you can reach clients that are farther away, those clients will also need the appropriate power output to reach the base again - and those wireless cards are limited in that way.
There are two essential pieces to tracking down a problem with your VoIP equipment:
The configuration of every device involved
SIP protocol traces
And don't forget: there's no such thing as giving too much information when describing a problem.

Safari still freezes when accessability voice over is on and blue tooth keyboard still doesnt work when accessability voice over is on, Help

Hi Apple,
iphone 5s latest updates , safari still freezes when accessability voice over is on and blue tooth keyboard still doesnt work when accessability voice over is on, Help

Hi,
If you are absolutely sure that neither the sound output of the Macbook nor the sound output of VoiceOver are muted then try to reset VoiceOver.
1. Open VoiceOver Preferences.
2. From the File menu choose "Reset All VoiceOver Preferences …".
3. Click "Reset.
4. Turn VoiceOver Off and On again. (hold command and press F5 twice).
If you still don't hear anything then it could be that the main sound output of the Macbook got muted somehow. I find that I often hit the mute button on my Apple wireless keyboard without noticing. So just make sure that its not muted and also hit the "Volume Up" a few times. Its so terribly obvious I know but its also very easy to miss. Lots of people do that.

I have these black boxes around my active pages, but I have voice-over disabled, any help?

I have these black boxes around my active pages, I looked online for pointers but they all pointed to me disabling my voice-over in the universal access option on system preferences. My voice-over wasn't enabled and the boxes are still here, any help?

Please read this whole message before doing anything.
This procedure is a test, not a solution. Don’t be disappointed when you find that nothing has changed after you complete it.
Step 1
The purpose of this step is to determine whether the problem is localized to your user account.
Enable guest logins* and log in as Guest. For instructions, launch the System Preferences application, select Help from the menu bar, and enter “Set up a guest account” (without the quotes) in the search box.
While logged in as Guest, you won’t have access to any of your personal files or settings. Applications will behave as if you were running them for the first time. Don’t be alarmed by this; it’s normal. If you need any passwords or other personal data in order to complete the test, memorize, print, or write them down before you begin.
Test while logged in as Guest. Same problem(s)?
After testing, log out of the guest account and, in your own account, disable it if you wish. Any files you created in the guest account will be deleted automatically when you log out of it.
*Note: If you’ve activated “Find My Mac” or FileVault in Mac OS X 10.7 or later, then you can’t enable the Guest account. The Guest login created by “Find My Mac” is not the same. Create a new account in which to test, and delete it, including its home folder, after testing.
Step 2
The purpose of this step is to determine whether the problem is caused by third-party system modifications that load automatically at startup or login.
Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards. Boot in safe mode* and log in to the account with the problem. The instructions provided by Apple are as follows:
Be sure your Mac is shut down.
Press the power button.
Immediately after you hear the startup tone, hold the Shift key. The Shift key should be held as soon as possible after the startup tone, but not before the tone.
Release the Shift key when you see the gray Apple icon and the progress indicator (looks like a spinning gear).
Safe mode is much slower to boot and run than normal, and some things won’t work at all, including wireless networking on certain Macs.
The login screen appears even if you usually log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
*Note: If FileVault is enabled under Mac OS X 10.7 or later, you can’t boot in safe mode.
Test while in safe mode. Same problem(s)?
After testing, reboot as usual (i.e., not in safe mode) and verify that you still have the problem. Post the results of steps 1 and 2.

Voice Over Wifi Issue: random service interruption

Hello,
I have implemented a Voice over Wifi solution based on WLC 4404, AIR-LAP 1131G and CP-7921G. The Security mode deployed is WPA PSK. I have a random interruption on wireless access witch cause the CP 7921G to lose connectivity to the CUCM, even if the Phone is near to the AP and does not move. What can be the cause of the problem. Thank you in advance.
Best Regards
Houichi Nizar

Hi,
we are experiencing the same issues.
The VoWifi design guides (i.e. TPC, DCA, Media, EDCA, WMM, QoS) have been followed setting up the Controllers.
Tested WLC4402 / WLC4404 with firmware versions 4.2.207 and 7.0.116.
Experiencing the issues on 7921G (firmware 1.3.4SR1) and 7925G phones (firmware 1.3.4SR2 and 1.4.1SR1).
The access points used are 1242G with a mix of AIR-ANT1728 and AIR-ANT24020V-R diversity antennas.
It is a warehouse environment. Phones are very near to access points.
We only use 802.11b/g for wireless phones and data clients.
The only issue I found is the cell size which is small and AP transmit power is low.
Auto RF and Auto DCA is enabled. AP power levels are 5, 6 or even 7 in areas with a lot of access points.
We have a high density b/g clients on some areas in the warehouse and added some access points to seperate the AP load.
Kind regards,
Rob Vreede.

Recommended microphones for Voice Over use

I have tried plugging in my Sony wireless microphone, and also a shotgun mic into the line in port, but with no success. The mics aren't being recognised by Final Cut.
Can anyone advise me what I am doing wrong, or recommend a different microphone that I should be using?
Thanks
Stephen (Salisbury, UK)
G5 Quad Mac OS X (10.4.5) 4.5GB of Ram Quadro FX 4500 graphics card

There are a number of places to check to ensure the system is accepting audio from the Line In port.
1. In the Voice Over tool, look in the middle of the window and SOURCE to Built-in Audio and set INPUT to Line In.
2. In: the Blue Apple on the menu bar>System Preferences>Audio - make sure you have set the imput to Line In
3. In Utilities> Audio Midi Setup>Audio Devices - make sure you have the Default Imput set for the line in port on your mac.
It has been noted by many people that the files brought in this way (through VO) often need serious gain added (aka - they are very quiet and the volume needs to be increased). A mic pre-amp is a good idea. Otherwise, you can either bump the gain in FCP or use an external audio app (i use peak) to bring it up to desired levels.
good luck,
x

Unable to capture audio from BlackMagic HD Extreme via Voice Over tool

Hi !
I'm trying to capture audio via my BlackMagic HD Extrem card using the Voice Over tool in FCP6, but I can't, no audio is incoming.
I can ingest audio with video using log and capture, then I know my card and my cables are working.
I tried to set the BM card as audio input in my Audio's System Prefereces Pane, but it isn't working either.
I've been looking on the BM website, but I found nothing.
Can you help me ?
Thx

Thanks for the reply.
Looking at system preferences I found that audio input was set microphone. Don't know how it happened. I switched it to DeckLink and now FCP displays 16 input channels in Log and Capture dialog. I didn't try to capture yet but I think it solved the problem, because before I had only two channels displyed.

I created a slide show in imovie for my daughters 21st with voice overs from friends and family which was all working fine but now the voice recordings are not playing at all. Obviously some setting has changed but I can't find which one.

I created a slide show in imovie for my daughters 21st with voice overs from friends and family which was all working fine but now the voice recordings are not playing at all. Obviously some setting has changed but I can't find which one.

I created a slide show in imovie for my daughters 21st with voice overs from friends and family which was all working fine but now the voice recordings are not playing at all. Obviously some setting has changed but I can't find which one.

Voice over wireless calc

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