voip pabx technical faq

Can I reduce the PABX's reliance on DNS in case my DNS server dies?

What firewall ports do I need to configure?

Can I use a SIP phone directly over the Internet back to my PABX?

Can I use XXX's VoIP service, and how?

web interface

The web interface won't log me in.

configuring

How to configure Siemens Gigaset C460IP or C450IP

How to configure Siemens Gigaset S450IP / S685IP

How to configure Polycom IP Phones

How to configure directed pickup on a Linksys SPA962 with SPA932 sidecar

How to configure X-Lite 2.0 for Linux

This FAQ does not consider the necessity of configuring a graphical X-based Linux system, and enabling a headset and microphone in this environment. Usually these items will auto-configure on a modern Linux desktop system such as Debian, Fedora or Ubuntu. Download the x-lite executable from CounterPath. Open the downloaded archive, and place the single executable file somewhere in the filesystem where it will be runnable. If desired, create a menu or desktop shortcut to this executable.

Start the program. On first use, the audio wizard, and then the configuration dialog will normally be opened so you can add set up sound and configure a SIP registration, if not, click the properties icon above the numeric pad (to the right of "CLEAR") to open this screen.

Under the "System Settings" menu, you can configure Speaker, Microphone and ringer devices.

Under the "System Settings" -> "SIP Proxy" -> "[Default]" menu, you can enter the credentials for your SIP account. The details will be available from your PABX administrator once your softphone account has been created.

• Enabled: Yes
• Display Name: (enter your extension number or name here)
• Username: (enter your SIP account username here)
• Authorization User: (same as above)
• Password: (your sip account password)
• Domain/Realm: (hostname of PABX. eg pabx.voipcortex.co.uk)
• SIP Proxy: (same as domain/realm)
• Outbound proxy: (same as domain/realm)

NOTE: Your PC must be able to resolve the hostname of the PABX to the correct IP address. If DNS does not provide this facility, you may need to add a mapping into your local /etc/hosts file.

This should result in a phone that lets you know that you have registered okay. Dial "*600", and you should hear an announcement. After the announcement is over, anything you say will be spoken back to you. This will confirm that you can communicate with the system.

How to configure Linksys ATA devices

How to configure Linksys ATA devices to support "Hook Flash" (The "R" button for trnasferring calls)

How to configure Xorcom Astribank 8

phones

The manual says our phone can be auto provisioned, but it is not working.

I cannot log-on to the web interface of my phone. What is the username and password?

I hear pops hisses and/or pauses when talking on my phone.

Phones periodically report 'NR' or 'No Service' / All my phones have stopped working

If I transfer a call to a softphone it hangs up after 30 seconds

When I talk on my phone/headset, people say I sound very quiet

I use a headset on my phone, and can hear lots of humming or buzzing.

What version of firmware should I have on my phone?

I cannot transfer calls / Transferred calls are dropped / Transferred calls don't ring for long enough to be answered.

I do not get caller ID on inbound calls.

I do not get the correct caller ID on outbound calls.

Can I use my Nokia E61 phone as a SIP Phone on your PABX?

fax

We are using a soft-fax, and some people can never get a fax to us.

We are using a FAX machine on an ATA, and it is unreliable. What can we do?

I've heard about using T.38 for faxes on digital systems. What is it, and can it help?

Is there an email-to-fax facility on the PABX?

inbound calls

Inbound calls do not work.

outbound calls

I cannot dial 100 to get the operator

I want to use a VoIP channel by default. How?

How can I calculate correct charges for calls made over the IPCortex VoIP service?

The calling number (CLI) is being sent correctly for most of my calls, but sometimes the called party sees the call coming from lowest DDI in my range instead. What can I do to fix this?

email

Email notifications of voicemail or faxes is not working

voicemail

I dial 8500 to pickup voicemail but nothing happens