Synway Syn_PBX100 U100, Руководство пользователя, Страница: 77 / 132

Copyright ©Synway All Rights Reserved76 / 132 V2.1.2
There is a default Smart DID rule which enables all outbound calls to be monitored by the Smart
DID feature. If the call is not answered by the called party, then the called number will be stored
into the Asterisk database with the extension number which made this call.If the called party
does make a callback to the SYN_PBX system then the call can automatically be directed to the
extension number.
If you don’t want all outbound calls monitored by Smart DID, you can modify the existing rule or
click “
New Smart DID Rule ” to add your custom rule/rules. An example of this is detailed below:

Pattern : Defines the number format which would be dialed.

Strip : Remove some digits from the front of the dialed number.

Prepend : Prepend some digits in front of the dialed number after manipulated by the “Strip”
option.
The numbers to be dialed will start with prefix 17951 and if they call back, the expected numbers
will have +86 in front of them instead of the 5-digit prefix 17951. In such a situation, the
outbound and inbound numbers are not the same, you’ll need the “Strip” and “Prepend” options
to manipulate the dialed numbers to make sure it can match the “same” number when it calls
back. If the numbers to be called and the numbers to be received are the same, then you don’t
have to configure these 2 options. Alternatively, you can configure only one of these 2 options, it
will all depend on your actual requirements.
For example, the extension user 401 wishes to call 85337096, and the carrier requires a prefix
17951 to ensure the rate is much cheaper. The user will dial 1795185337096 to place this call. If
the called party misses this call then the SYN_PBX system will store this 8685337096
with extension number 401 into its database. Later on, if the called party tries to call back, the
SYN_PBX system gets +8685337096 as the caller ID and matches this from its database, once
successfully matched, this call will be automatically directed to extension 401.
Notice :
1. The records for Smart DID functionality in the system database will be erased every day at midnight. This means