Asterisk – IT Blog

Solution for warning Asked to transmit frame type ulaw, while native formats is (g729) read/write = ulaw/ulaw

Once a user made a call and Asterisk began to display a lot of warnings, and there was also no sound:

Asterisk. MP3 for Music on hold (moh)

In this article, I will provide an example of setting up MP3 for Music on hold (moh) in Asterisk.

ABillS. Installing and configuring Callcenter

Once in one company, in order to simplify the search for callers in ABillS, it was necessary to install the Callcenter module, which has different capabilities, but what we needed was pop-up notifications in the browser with a link to the caller’s page.

Asterisk. Music on hold

In this article, I will provide examples of changing music on hold, force music on hold, and more.

Asterisk Call Forwarding

Let me give you an example of setting call forwarding in Asterisk.
For example, on Grandstream IP phones, you can enable redirection by the functions of the phone itself, but if the phone is far away and there is no way to do it on it, but it is possible to log in using the SIP number of this phone, then to activate call forwarding, you can make a voice menu when dialing a certain number, for example, *21 to activate call forwarding and enter the phone number to which calls will be forwarded, and *22 to cancel call forwarding.

Solution the error “rc_avpair_new: unknown attribute 1490026597”

I noticed once an error in the logs /var/log/syslog:

Asterisk. Solution “Not accepting call completion offers from call-forward recipient Local”

Once on one Asterisk server I noticed the following error:

Asterisk Call Recording

I will describe an example of setting up recording telephone conversations in Asterisk, first of all, make sure that the necessary modules are loaded.

Configuring TDM410P with Asterisk

In the test, I connected a Chinese TDM410P board with four FXO ports (red) to the PCI slot of the turned off Ubuntu server.
For convenience, immediately switch to the root user:

Configuring FSK in Asterisk to determine phone numbers

To determine the number from analog lines, you need to specify in the context for each Trunk channel Dahdi: