...
| 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:
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.
Setting a single Caller ID for all outbound calls
If you want all outgoing calls to have the same caller id (typically true if all or most users do not have a DID so incoming calls go to a single 'main' number), then you can associate the number you want with the gateway.
...
Fill in just the 'Default Caller Id' setting with the number you wish to send as your caller id.
Blocking Caller ID for all calls
To always prevent any caller id from being sent, check only the 'Block Caller ID' checkbox.
Transforming the callers extension into a Caller ID
If you have users who have individual Direct Inward Dial (DID) numbers, and those users' extensions can be mapped to the DID numbers using some pattern, then you can configure the pattern once at the gateway. To do this transformation, check the 'Transform extension' checkbox, and then set the following two fields:
...
Keep digits: 3
Caller ID prefix: 9785556
...
User specific Caller ID
If you have some users whose extensions cannot be transformed by a pattern to the Caller ID value you want for them, you can set a specific value on the User Caller ID screen; as with the gateway, you can check the 'Block Caller ID' to make all calls made by the user anonymous:
...
Unless the gateway configuration has set the 'Ignore user Caller ID' flag, a user specific value takes precedence over the value set by a gateway.
Group Caller ID
Caller ID can also be defined at the User Group level. If set in the group and not overridden by the specific user, all users in the group share the same caller ID number for outgoing calls.
...
As with any group setting, if a user is in several groups, the setting of the last group is the one that controls the active caller id.
...
What caller id is in SIP
The nearest equivalent to the PSTN caller id in SIP is the 'From' header field, which can include both a Display Name (set in sipXecs on most phones from the first and last name fields of the user), and a number - carried as the part of the sip address between 'sip:' and the '@' character.
...