atcomsystems.ca/forum Forums TDM Business Telephone Systems Inter-Tel Telephones & Systems pri and echoing on ip phones.

All who can help with this problem I thanks in advanced.

I have a customer that has 4 nodes. They are connected through the network. All the desk phones are ip phones.

No echo issue with internal calls. Problem with echo comes from outside calls. Primarily inbound calls. Since they received more inbound calls then outbound, the problem maybe both.

Delayed audio, end user hearing themselves, sounding like an echo chamber.

Customer, who is the network administrator, has adjusted part of the network. Set the echo suppression of the problem phones from 2 to 3 to 4.

I found that by setting the b channels xmit and receive levels to -3 db, that helped with the echo.

Friday, the customer called up with complaints of one way audio on calls, dropped calls in the middle of a conversation. First time I have heard of it. Nothing to do with the -3db change from the other day. Still some echoing, but not as bad.

The pri shows no errors on the hourly, daily db screens. No errors have showed up on the admin phone.

There is a test port on the pri module. Is it simular to the rs-232 port that was on the Axxess t-1/Pri card. I have searched to database on the Edge. Can't find anything in the manual on how to look at the channels on the pri like at the Axxess.

Can I look at the b channels through the test port?

Any suggestions will be appreciated. It's 5 am and I have to go out shortly. I will check the message board if someone can help me out.

Thanks.

Mike

I

So, you hint at having Inter-Tel 5000's? Can you reply w/ the version of each site?

the sites are running 2.3.6.47

First off, have the fones had sidetone adjusted to the lowest setting? This is critical and should be done w/ all Inter-Tel IP fones.
Second have the trunks been placed in an echo profile? Also critical.
Third, you can look at T1 stats and real-time activity by using an SSH client. This can be done on-site or via a remote modem connection.

Thanks for the reply superfoneguy.

I'm on site right now. The customer has the phones with issues in different echo suppresson profiles. I have taken the b channels of the pri xmit and receive gain down to -3 for the channels. That seemed to help alot.

What do you mean by a ssh client and is it expensive?

where is the sidetone adjustment for the phones?

Thanks again,

Mike

OK, 1st lets get the sidetone checked/adjusted on all the IP fones as that will make echo complaints go away the fastest. Connect to the PBX. Go to Operations\IP Device Status. Click 'Get Status'. This will show you a list of all IP devices, whether they are connected and what the current IP address is. Activate Internet Explorer and navigate to https://ip address of 1st IP fone:8080. Enter username and password (it is listed in the IP devices manual). Click on 'Audio and Call Control', change Sidetone Level to '1', click 'Update' and 'Reset Device'. This will minimize sidetone, which people confuse w/ echo.

SSH is a secure protocol used to communicate w/ SSH-enabled devices, it is similar to Telnet. Inter-Tel included an SSH client in it's 5000 DB Programming s/w. Do a search on yer programming PC for 'putty.exe'. It is simple to use. The login credentials are the same as the 5000 http credentials. You can navigate to T1 commands from the main menu.

Is the sidetone adjustment something that can be done on digital handsets? We sometimes have very bad echo.

No. Try attenuating the trunks. Go to System\Devices and Feature Code\Trunks\Transmit and Receive Gain. Make them both -3 DB and test. Make sure no one is on the fone when you do this.