We ordered from Telco E1 DID/DOD and I prepare my router to connect the e1 using e1 card. Bur the telco told us there is no availability now for e1 so that they provide us the DID using SIP trunk. and I do not understand how I can connect my callmanager to SIP using the DID/DOD.
Please if anybody know help me.
I did not receive any information till now form telco, shall I ask about any thing
I know it is silly question but this is first time I am facing this problem and it is not common in my country.