How many DID number can I create for each E1 channel

Dear All,

1 E1 has 30 channels, how many DID number can I create for each channel?
I need advise

Thanks & Regards


You will need to ask your network operator.

As Asterisk can use pattern matches, the amount of memory required can be considerably less than that needed to define an extension for every DID number, so the number isn’t necessarily limited by Asterisk.

In theory, the full length of the phone number could be used for digits forwarded to you.

In practice, it would be unusual to use more than four digits, but that is still 10,000, and there are probably cases which use five digits.

Of course, it would be a rather unusual market in which 10,000 numbers carried only 30 erlangs of terminating traffic or 15 erlangs of transit traffic.