Changing the caller number of an incoming call

@LouisLondon wrote:

We are using FreePBX along with a Sangoma A102DE and this connects to a legacy PABX using a QSIG trunk. Call routing is working as expected both ways. All PSTN is on the legacy PABX and sent to FreePBX over the single QSIG trunk. However we'd like to alter the calling number for PSTN calls and calls from legacy PABX extensions coming in to this single trunk on FreePBX.

• Add a leading 0 to the calling number of incoming PSTN calls.
  Currently for example, incoming call will show as 2071234567, change to 02071234567

• Remove the the first 3 digits from the 7 digit legacy extension number so that only 4 digits are presented to FreePBX users.
  Currently for example, internal calls from a legacy extension show as 7506500, we'd like to change this to show to 6500

We've tried creating an inbound route for a given extension with the destination set to Set Caller ID and then use the Set Caller ID module to append the missing 0 but this is a fair amount of work given we are migrating 100's of users and secondly, 0 is then added to calls from legacy extensions so this isn't going to work for us.

Really appreciate some pointers on how to at least get started with the above,

Thanks

Louis

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