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T48G random reboot

August 7, 2015, 3:36 am
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Hello,

We have a problem with some of our T48G IP phones. Sometimes when we want to transfer a call to a co-worker the BLF buttons on the screen disappear and the phone reboots. This problem doestn occur always but a like 40% of the calltransfers.
The firmware is maintained by our sip provider firmware version is : 35.72.188.11.
The sip-provider has no idee what the problem could be.
We have looked in the phone it self , the network etc.

Anyone got any idee where to look ?

Any help would be appreciated ! Thanks

Greetings,

Michel
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VP530 video bug

August 7, 2015, 5:51 am
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Hello

My company is evaluating VP530 before deployment
I am experiencing a annoying bug with stock 23.70.0.41 and 23.70.248.202-UC firmware. The phone connects OK with asterisk. Calls are OK, H264 video calls are OK. After some video calls the VP530 stops to send video for no reason, and get stuck till you erase all the settings and reset the phone configuration from scratch, till the next hang.

You will understand I will not reset the whole configuration every 2 or 3 calls

this looks like a bug as other phones work OK (bria, grandstream, jitsi)

has anybody got a clue about this?

might be related with audio ilbc usage?
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T20P call interrupted in 30'

August 7, 2015, 6:17 am
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Hi All,

We have installed 4 T20P phone for a test. We thought to change all the phones in our office with this model... but we have a very big issue.

When i use soft phone, there is no problem, but when i use the T20P Calls is interrupted in 30'.

Best Regards
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Problem loading directory via xml service on T21P

August 7, 2015, 12:28 pm
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Dear all!
I'm writing a service to feed the remote directory. I'm following the steps found in the Yealink IP Phones XML Browser Developer's guide V72.1, but whe i see the remote directory on my phone it appears blank.
My firmware version is: 34.72.0.75

An example of my XML:

Code:
<?xml version="1.0" encoding="ISO-8859-1"?>
<YealinkIPPhoneDirectory>
    <Title>SOFTNET</Title>
    <MenuItem>
        <Prompt>Jhon</Prompt>
        <URI>101</URI>
    </MenuItem>
    <MenuItem>
        <Prompt>Jane</Prompt>
        <URI>102</URI>
    </MenuItem>
</YealinkIPPhoneDirectory>

Thanks!
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UTF-8 Encoding for Telephone Numbers?

August 8, 2015, 6:15 am
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If I send a telephone number including the + character to a T4x telephone, the + is shown as %2B, i.e., there is something wrong with the UTF-8 encoding.

Any ideas?
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Yealink T28 End of Life??

August 9, 2015, 9:07 am
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is the yealink T28 end of life? my re seller tells me they are not selling T28-26-22 anymore, i should buy instead T27.
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W52P died on me

August 10, 2015, 8:52 am
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So out of the blue, my W52P can't get IP address anymore, and just died on me. It is powered through POE and worked perfectly until a couple of weeks ago. The unit is probably 3 years old. Did this happen to anyone ? Is there a fix ? Or should I just toss everything and buy another brand ?

Thank you.
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Release notes for firmware x.80.0.70

August 10, 2015, 12:07 pm
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Hello,

There's new x.80.0.70 firmwares available to download on support.yealink.com, but I did not found the related releases notes, i.e. I only found releases notes about the x.80.0.60 firmware.

My question is, what does the x.80.0.70 firmware fixes ?


Thank you
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Remote Phonebook help

August 10, 2015, 12:39 pm
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Hello, I have a set of t19p(FW v72) and t26p (FW v73) phones running fine.
I have to questions:

1- We were provisioning two separate remote phonebooks to our phones but one of them is no longer needed. How can I remove it or delete its settings from phones by autoprovisioning?

2- When I browse a remote phonebook by entering into a group, the screen shows ""unknown" as title. It should show the name of the group.
I'm using the provided excel XML generator.

Thank you for you help!
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T42G stuck in Recovery Mode

August 10, 2015, 2:19 pm
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Hello all,

Recently, I tried to upgrade an T42G phone to 29.73.0.45.

However, the upgrade failed and the phone get stuck on the Welcome screen.

So, I tried the recovery mode. The phone could get the files from the T4X_SPI.bin, the T4X_SPI.rfs and the T42.rom from our local TFTP server.

But right now, it is frozen on Firmware updating for almost an hour.

Could you please give us some troubleshooting on this?

Thank you,
Sebastian
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T48G High Ping

August 10, 2015, 3:20 pm
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I have an asterisk server with several phones connected and although I don't actually have any issues, I noticed that the yealink phone has a fluctuating ping of 58ms - 158ms?

Snom phones have a ping of 10ms
Obihai phones have a ping of 2ms
Panasonic phones have a ping of 11ms
Yealink phone has a ping of 108ms??? It drops to 58ms at times but a few seconds later it's back at 100ms+?

Version
Firmware Version 35.73.0.50
Hardware Version 35.0.0.0.0.0.0
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MultiCast Paging CP860

August 10, 2015, 3:58 pm
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For the life of me I can't figure out how to get multicast paging going on the CP860s.

Here is a list of things I have done so far, phones are auto provisioned with the following settings

Code:
multicast.codec = PCMU
multicast.receive_priority.enable = 1
multicast.receive_priority.priority = 0
multicast.listen_address.1.label = Page All
multicast.listen_address.1.ip_address = 239.1.1.1:5001

I have configure two CP860 with the same above settings. On one of the phones I setup a DSSKey as Multicast Paging with the following value: 239.1.1.1:5001 which was unsuccessful.

In order to eliminate my network as the issue. I setup my sip server with the following routing table:
Code:
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         10.50.70.254    0.0.0.0         UG    100    0        0 em1
10.50.50.0      0.0.0.0         255.255.255.0   U     0      0        0 em1.20
10.50.70.0      0.0.0.0         255.255.254.0   U     100    0        0 em1
169.254.0.0     0.0.0.0         255.255.0.0     U     1004   0        0 em1.20
224.0.0.0       0.0.0.0         240.0.0.0       U     0      0        0 em1.20

And setup a windows desktop on vlan 20, with network card assign to vlan 20 as the highest priority card.

I then setup ffmpeg to multicast with the following command:
Code:
./ffmpeg -re -i ./test.mp3  -filter_complex 'aresample=8000,asetnsamples=n=160' -acodec pcm_mulaw -ac 1 -vn -f rtp udp://239.1.1.1:5001

And then proceeding to VLC open a network stream with the address:
Code:
rtp://@239.1.1.1:5001

My Desktop pc was able to successfully pick up the stream.

When initiating a page from the phone the syslog logs as follows:
Code:
Aug 10 23:13:59 Log [841]: TALK<6+info  >Local IP Address:10.50.50.159
Aug 10 23:13:59 Log [841]: TALK<6+info  >Paging local_ip_address 10.50.50.159:11790

I have tried these test with the following firmware:
37.72.0.4
37.72.0.5
37.72.0.10
And all have been unsuccessful.

If there is anything that I could do to further test the issue, or if you require any more information please don't hesitate to ask.
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W52P call transfer supervised

August 11, 2015, 3:23 am
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Hello,
We started using Yealink W52P as a simple DECT phone for our customers, and with the demo we where able to use the R-key to put caller on hold, and dial another extension. In the display came 2 options, END and TRANSFER.
END took me back to the caller, and TRANSFER send the call to the other extension.

Since we received new phones, we have been unable to duplicate this.
We can use R-key and dial another extension, but then cannot go back to caller, everything we do, transfers the call.

Does anyone have an idea which settting this could be?
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T46G - Display burnt into screen

August 11, 2015, 6:43 am
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Hello everybody,

we are now using twenty-five T46G-phones in our Company for just one week!
How is it possible, that the Display is burnt into Screen on ALL of the phones after just one week without "always on Option" for Screens?
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T41P VPN Not Working

August 11, 2015, 7:13 am
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Hello and sorry if this lands in the wrong spot. I have been working on trying to set up one of our T41P to work with our OpenVPN. Below is the configure file used for the phones and I have verified the VPN is functional with another machine. Any help would be much appreciated. I followed what information I could from the post found here http://forum.yealink.com/forum/showthread.php?tid=1958 but I am still having issues. Any help would be fantastic, thank you!


client
dev tun
proto udp
remote 50.X.X.X 1194 #This is the public IP of the VPN.
resolv-retry infinite
nobind
persist-key
persist-tun
ca /config/openvpn/keys/ca.crt
cert /config/openvpn/keys/client.crt
key /config/openvpn/keys/client.key
comp-lzo
verb 3

Thank you once again and let me know if further information could be helpful.
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Call history Yealink T46G for attended transfers

August 11, 2015, 7:16 am
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We are using firmware 28.73.0.48 (3cx supported version).

When an incoming call comes in via attended transfer, in call history on the telephone we see the extension that transferred the call to us. We do not see the external caller ID in call history.

Eg phone number 01582 123456 calls and is answered by extension 200, and then does an attended transfer to extension 210.

The call history on the phone for extension 210 shows a call from 200. It does not show a call from 01582 123456.

Is this a setting that can be changed in the provisioning template, or a bug or "feature" of this firmware?

I am not sure when or how it changed, but I am sure in the past the call history used to show the external caller number, maybe on an older firmware.
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T41P BLF not working

August 11, 2015, 7:56 am
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Hello,

i just bought 2 T41P's but i can't seem to get the BLF leds to get to work
i have a hosted pbx (3 inbound channels, 1 outbound).
currently only those 2 phones are connected (extention 100 and 101)
below the settings
[Image: img1.png]

apart from this i also enabled :
features -> call pickup -> visual alert for blf pickup

account settings
[Image: img2.png]
(just replace 100 by 101 for the second phone

any other settings that i still need to change to get this to work?
for the moment no lights are lighting up...
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T46G BLF Not Working

August 11, 2015, 10:17 am
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Trying to configure the BLF fields for the T46G phones and what we get when we configure the BLF is a red "X" in the description field. The EXP 40 just does not light up when those are configured. If you Press the BLF key it transfers as it should, but none of the status lights will light up. Firmware and setup info is below.

Firmware: 28.73.0.50

BLF Value=Extension # Label=Display Label Extension=Blank

I have tried it with a direct dial code in the extension field and it does work, again it just does not light up.

If there is any other info you need please let me know! Thanks!
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Explain how registration retry works

August 11, 2015, 8:42 pm
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Yealink,
Could you please explain how registration and retries work?
Under "Account/Register" there is the Server Expires and Retry Counts.

What happens if the SIP server is not reachable within the retry count?

So here is the situation.
Customer has remote phones. Each night the customers firewall has a automatic reboot set on it so the internet goes down for a few minutes.

Randomly in the morning they will have phones "T46G" that will not be registered.
If we power cycle, change setting, enable/disable account do anything on the phone that would trigger it to re-register the phone will come online.

So what i am thinking is that the firewall is taking long enough to reboot that the retry timeout is hitting so the phone stops trying to re-register.

Is this possible? If not what else could cause this?
Would it be as simple as increasing the retry count from 3 to say 6 or something?

Phone has been through all the builds on V73 and is now on V80 still seeing the same issue.

Thanks
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Yealink IP Phones interoperability

August 12, 2015, 7:45 am
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Yealink Ip phones are compatible with NEC Univerge PBX sv8100/8300/8500.
The list of interoperability not mention that mark.
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