I use the [from-analog] context to apply a fake DID to DAHDI trunks, and that works fine with our regular lines
But have just hooked up a 4G router that outputs (00 + Country Code +Number) in the CID on incoming cellular calls to an analog trunk. I would like to strip off those leading 4 digits, but cannot find a place to insert the appropriate code. In the past with a SIP device, I just used a [from-pstn-custom] entry.
Its not a big deal as I currently force outgoing callers to dial the whole number on this particular trunk, to keep everything consistent, but any suggestions where (not how) to modify this in the dialplan are welcome.