The process of calling Rwanda from Solomon Islands is fairly simple. To make the call, you will need the country code for Rwanda (250), the area code for the city you are calling in Rwanda (1), and the phone number you are calling.
First, dial the international access code for Solomon Islands, which is 00. Next, dial the country code for Rwanda, 250. Then, dial the area code for the city you are calling in Rwanda, 1. Finally, dial the phone number you are calling.
For example, to call the Rwandan embassy in Washington, D.C., you would dial 00-250-1-202-739-9000.