Patrick Kim
asked on
Yealink T22p Quality Issue
Hi,
We have around 7 Yealink T22p.
Phone quality is good when only one phone is being used.
If there are more than two phones are being used at the same time, one of them breaks up a lot but it breaks up the quality from our end. It means that I can hear the other person well but this person cannot hear me well as my voice breaks up.
They are all connected to a Cisco POE switch (2960-S). We have NBN Internet 80Mb/30Mb.
Summary,
1. One call at a time is okay
2. If two devices are making calls or being used at the same time, one of them breaks out a lot. The test was carried out when the network is free during the weekend.
The test was carried out when the network is free during the weekend.
We have around 7 Yealink T22p.
Phone quality is good when only one phone is being used.
If there are more than two phones are being used at the same time, one of them breaks up a lot but it breaks up the quality from our end. It means that I can hear the other person well but this person cannot hear me well as my voice breaks up.
They are all connected to a Cisco POE switch (2960-S). We have NBN Internet 80Mb/30Mb.
Summary,
1. One call at a time is okay
2. If two devices are making calls or being used at the same time, one of them breaks out a lot. The test was carried out when the network is free during the weekend.
The test was carried out when the network is free during the weekend.
Is your PBX onsite or hosted? Is VoIP traffic segregated to a different VLAN? The latter would be majorly helpful with managing bandwidth.
Other questions to consider include:
Are most of your systems onsite or hosted? Do users do a lot of streaming? Locking things down a bit might also free up network capacity.
Other questions to consider include:
Are most of your systems onsite or hosted? Do users do a lot of streaming? Locking things down a bit might also free up network capacity.
ASKER
James
Do you have QoS, Quality of Service, enabled on your firewall/router/switch?Only enabled on firewall not on the switch.
What is your internet connection like?average speed 50Mb down 30Mb upload (Hybrid Fibre Coaxial)
What is the cabling going to the switch like, is it Cat5, 5e, 6?Cat5
What CODEC are your Yealinks running?G722, G729, PCMU, PCMA
What PBX/SIP system are you using with these phones and do you have access to a control panel for this system to see stats?We are using Voip Cloud Hosted PBX. We can control panel access but I do not know what stats I need to look for.
Does the switch support the QOS as well? If the phones are passing through it, the QOS on the switch can allocate bandwidth reserrvations for the LAN traffic and the firewall helps as well on the WAN traffic.
Since this are cloud based, are you using STUN or SBC? If Stun, if you take the phone to another network like home or another location do they work properly there or drop still?
If you have the static IP address of your hosted PBX you can use a system like Uptime Robot to monitor that server over a few days to get uptime, typical latency, etc. to build a case if its the PBX or your infrastructure. https://uptimerobot.com
For LAN traffic, you can use a program like PRTG to watch your network in house to build a better understand of what if anything is sucking down the connections. https://www.paessler.com/
Since this are cloud based, are you using STUN or SBC? If Stun, if you take the phone to another network like home or another location do they work properly there or drop still?
If you have the static IP address of your hosted PBX you can use a system like Uptime Robot to monitor that server over a few days to get uptime, typical latency, etc. to build a case if its the PBX or your infrastructure. https://uptimerobot.com
For LAN traffic, you can use a program like PRTG to watch your network in house to build a better understand of what if anything is sucking down the connections. https://www.paessler.com/
ASKER
Yes the QOS is enabled. But would qos be relevant when network is completely free? Only phones were connected during the weekend so no other traffic was passing through the network.
Phones still break up when I move them to another location (a different Internet)
Interesting thing is, we have two t41p phones but they have no problem. Why is the issue happening to only t22p model?
Phones still break up when I move them to another location (a different Internet)
Interesting thing is, we have two t41p phones but they have no problem. Why is the issue happening to only t22p model?
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Do you have QoS, Quality of Service, enabled on your firewall/router/switch?
What is your internet connection like?
What is the cabling going to the switch like, is it Cat5, 5e, 6?
What CODEC are your Yealinks running?
What PBX/SIP system are you using with these phones and do you have access to a control panel for this system to see stats?