Can someone help me?
I have three escenarios:
************************The first escenario I have this
***********************The second escenario I have this
**********************The third escenario I have this
All the escenarios have diffrent versión of IOs and different configuratión one off them have the configuratión for a cisco 7921, another only have basic configuration. The three escenarios have multicast on it.
I have a SSID for a voice and I Have this for voice
Phone Motorola EWP 3200
Avaya IP Softphone v188.8.131.52
I have the same Issue for all the escenarios that i Have and the issue are when I call another phone in the same WLAN I have a big delay over a voice, it can be at least 2 second
Any one know if this issue is coused by the WLAN?
This could be any thing.
Scenarios you have described are completely different (Autonomous, CUWN, FlexConnet) deployment options & software versions may be completely different.
Focus on one (preferred option 2) & try to narrow down the issue. What is the AireOS version of your 2125 ? (I hope it is 184.108.40.206, if not get it to that version first).
Then make sure your WLC configuration is align with the recommended configuration for VoWLAN. Below documents may help you
Then connect your two phones onto same 1242 (in 5GHz band) & test.
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I have many version of wlc from 220.127.116.11 to 7.4 and I have the same Issue in all version.
In the third escenario my phone are in 5Ghz band and clean air enable and I have the same delay that the phone in 2.4Ghz band.
The data rates in 5Ghz are 1-9 disable, 12 Mandatory, 18-36 supported, 48-54 disabbled
I all ready follow the best practices for a cisco phone 79xx and de best practices for a spectralink phones and the problem remains
If you can find another 7921, then test it between two 7921. Get a packet capture & see where is the delay occurs. It is good if you can test this with 7925 with latest firmware on it.
Post your "show wlan <wlan-id>" to see how you configure the SSID
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I don´t have 7921 for my voice solution, I have a Phone Motorola EWP 3200 working with Avaya IP Softphone v18.104.22.168 and all the telephony are Avaya.
I did the test with 3 different telephones in each escenario
And we have the same problem
There are three significant segments in a wireless voice deployment:
1. Wireless segment;
2. LAN/WAN segment; and
3. Call Server segment (including how you configured and set up your 7921G)
So far, you've described (vaguely) your wireless segment.
Hi Leo Laohoo,
I Will describe my wireless segment.
I have 6 warehouse, in those warehouse I have data and voice over wireless and cable. the voice over wireless is in another vlan than de traditional voice
I have 3 SSID for my wireless network. Data, Voice and one for Symbol device
In all my warehouse I have the same solution for voice and is not cisco the solutions is like this network diagram
And I have diferent cisco wireless equipment in all the warehouses, in one or two I have Autonomos Access Point cisco 1231, in another one or two warehouse I have WLC AIR-WLC2125-K9 firmware 22.214.171.124 and Access Point AIR-LAP1242G-A-K9 and in the other warehouse I have WLC AIR-CTVM-K9 firmware 126.96.36.199 and access Point AIR-CAP2602I-N-K9.
I´m testing my best escenario with the WLC AIR-CTVM-K9 firmware 188.8.131.52 and access Point AIR-CAP2602I-N-K9 and I have the SSID for voice working in 802.11a/n, the phones have a RSSI -50 and SRN 30 and the other device are in 802.11 g/n
The lower data rates are disabled for 802.11a/g.
I all ready follow the Wireless IP Phone 7925G, 7925G-EX, and 7926G Deployment Guide in one escenario and in other warehouse with the same devices a do a simple configuratión for voice with out Qos, CAC, etc.
For rules in the company the security for voice are WEP
And I have the same issue in all my warehouse, working in band 2.4 or 5 Ghz one of them working with the recomendatios of Wireless IP Phone 7925G, 7925G-EX, and 7926G Deployment Guide. and the other with basics configuratión
1. Upgrade your WLC to either 184.108.40.206 or 220.127.116.11.
2. What happens when you ping the phones during a call? What are the average ping times?
3. You haven't described your LAN and WAN segment.
Hi Leo Laohoo,
In the attachment I hope to answer your questions 1 and 2
In the file I show you the print screen of one of the wlc and in the last part of the document you can see the print screen for a ping from two Motorola Phones before, during and after a call between them
3.What firmware is your 792XG phones running on?
--> I don´t have 792XG phones running on, I have EWP 3200 Motorola Phone with IP Softphone v18.104.22.168
Hi Leo Laohoo,
Thank you very much for your advice served me well, was detected that the problem is caused by the Nokia phones and not the wireless network.
Thanks for the update.
Could you provide us more information, like Nokia reference number to the issue and/or what was/were the finding/findings from Nokia?
The information will be beneficial to those who might stumble upon this thread and experiencing the same (or similar) issue(s).
I hope this reply is not too late...
I could never find information with Nokia about this issue, the solution was found by trial and error and the Nokia solution was compared against Cisco Solution and the Cisco Wireless ip phone not have the issue
The solution with Cisco works fine.