Host and outgoing (fromdomain) proxy can be different – check with host. If the codecs are wrong it will disconnect the call when you answer it. Check with your host as to what they accept. allow=ulaw,alaw – the most popular type of codecs. Peer Details – username and password will be provided by VOIP supplier – nat=auto as it is behind firewall. Trunk Name – Engin (can be called anything) Outbound Caller ID: “CMCRC” (can be left blank)ĭialed Number Manipulation Rules – leave blank. GUI > PBX > PBX Configuration > Trunks > Add SIP Trunk Stuff specific to our Engin installation: I will deal with specifics to our setup below.

Read and follow Elastix without Tears – this is great for most of the setup. Specify g729 as the top line or first to force g729 over the other codes.Īnd login with the username and password you used during setup You need to keep ulaw and alaw so Faxing continues to work as IAX2 faxes DO NOT FUNCTION with g729 only. Then do the same for the trunks (see below for config). We use g729 codec for lower bandwidth to avoid jittering so you need to install the correct codec from hereĬhmod 755 codec_g729-ast110-gcc4-glibc-x86_64-core2.so GUI > System > Network > DHCP Server Install Codec g729 You can and should do this on the Elastix server as it is very easy.

Spanning-tree link-type point-to-point New DHCP server and scope based on VLAN You must remove this line from the config (and make sure spanning tree is enabled on the POE switch and the root ID is higher than the core switch) or it will disable the port as it thinks it is a looped NIC rather than a switch. Macro description cisco-desktop | cisco-switch | cisco-switch | cisco-desktop POE is needed to power the phones and the whole switch’s VLAN is set to be 6. This is where our POE switch will go into. I created a virtual machine with two NICS one 192.168.16.60 and one for new VLAN – 192.168.18.253 New VLANĬreate a new VLAN for phones – in my case, 192.168.18.0.Ĭreate VLAN 6 and assign to gigabit port 3. Install Elastix like any normal CentOS iso (which is what it is derived from) and follow the prompts.

Elastix on centos 7 install