1. To enter the phone's web interface enter device's IP-address in URL bar.

To attain the phone's IP address, press the "Menu" button (Page) and select "Network" => "CurrentIP"

Open "Voice" tab "SIP" and specify range of RTP ports.

RTP Port Min: 1024

RTP Port Max: 65536

To save changes click Submit All Changes

https://zadarma.com/images/content/support/equipment/cisco/spa525/rus/1.png

2. Open "Voice" tab Ext1 and enter the following data:

PBX is not used PBX is used

Proxy: sip.mcntele.com or SIP Server address that is shown at KOMPaaS Portal

Register Expires: 300

Display Name: Your SIP account ID 

UserID: Your SIP account ID 

Password: Your SIP account password


To save changes click Submit All Changes