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  • Configuring Caller ID to the PSTN

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Note

The sipXecs proxy can manipulate what it sends to your connection to the PSTN, but different PSTN connections have different capabilities in terms of what is possible from there:

  • If you have an analog line, the caller id will always just be the number associated with that line: nothing that sipXecs does will make any difference.
  • If you have a T1 style connection through a gateway device, your terms of service and the capabilities and configuration of your gateway affect what will be presented on the PSTN.
  • If you use a SIP Trunk, then the configuration of your SIP trunk and how your provider passes the call on to the PSTN affect what will be presented.

Getting all this to work so that the id presented by the PSTN is what you want it to be may take some experimentation and reconfiguration. See #What caller id is in SIP below.

Gateway level Caller ID

There are a few different ways of manipulating the caller id that is sent to a given gateway; each of these apply to any call sent out through that gateway. Normally, any of these settings may be overridden by settings that are specific to a particular user as described below; to prevent a user-specified value from overriding the gateway value, check the 'Ignore user Caller ID' checkbox.

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Setting a single Caller ID for all outbound calls

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Between that From header field sent by sipXecs and the caller id display on the phone of the person you are calling are any number of possible transformations. It may be that it will require reconfiguration of one or more of the elements of that signaling path to get the result you want, and it may be that some part of your connection will prevent what you want. It will probably be helpful to verify how sipXecs is setting the value; to trace this, see Display SIP message Message flow using Sipviewer.