Yeastar Technology MyPBX-SOHO, Administrator'S Manual, Page: 143 / 204

MyPBX SOHO Administrator Guide
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APPENDIX F How to Use DID
Direct inward dialing (DID), also called direct dial-in (DDI) in Europe and Oceania, is a
feature offered by telephone companies for use with their customers' private branch
exchange (PBX) systems. In DID service the telephone company provides one or more
trunk lines to the customer for connection to the customer's PBX and allocates a range of
telephone numbers to this line (or group of lines) and forwards all calls to such numbers
via the trunk.
MyPBX support DID, you can configure DID in inbound route. Related settings: DID
Number, Extension, Destination.
Figure F-1
·DID Number
Define the expected DID Number if this trunk passes DID on incoming calls. Leave this
field blank to match calls with any or no DID info. Only service provider, E1 trunks, BRI
trunks or SIP trunks need to be configured with this setting.
You can also use pattern matching to match a range of numbers. The following patterns
may be used:
X : Any Digit from 0-9
Z : Any Digit from 1-9
N : Any Digit from 2-9
[12345-9] : Any digit in the brackets (in this example, 1, 2, 3, 4, 5, 6, 7, 8, 9)
The “ . ” Character will match any remaining digits. For example, “9011.” will match any