At present i have restricted CLI and a blank setting for caller ID DN, problem is some of my external calls are being rejeced because of unknown or private presentation. I plan to change this to our central board number for outbound calls, so far fine. My gateway is directly connected to a TDM exchange which provides access to PSTN and some TDM extensions. I wish to avoid the potential issue where all IP phone calls through the gateway are stamped as comming from my central switchboard number for calls destined to on-net TDM extensions. Is this a valid conecrn or will the IP extension number be presented for on-net calls
You will have different route patterns for different destinations - i.e. your TDM extensions might be covered by an 8xxx route pattern, whereas the PSTN route patterns will be 9.@ or whatever.
You can set the 9.@ to have a 'calling party transform mask' that sets the switchboard CLI, whereas the route pattern to the TDM extensions would leave it blank (i.e. use the extension number).
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