Altigen AltiContact Manager Version 4.6 Administration Manual page 220

Setting General Trunk Attributes
Parameter
Or
Apply to...
Note:
In order for back-to-back T1 and tie trunk T1 configurations to
perform properly, it is recommended that you use the system's
default incoming call sequences:
Caller ID and DID Incoming Sequence Example
The following is an example of a Caller ID and DID/DNIS incoming
sequence window.
Figure 8. Incoming Sequence window
7-18 AltiContact Manager Administration Manual
Description
Sets up an additional, alternative sequence. You can select
another set of up to five incoming symbols to collect.
Not checking any box is equivalent to checking 'None' in
the first field.
The default sequence is:
"DID/DNIS"
If appropriate, you can use this button, as described in
"Configuring One or Multiple Trunks" on page 7-2, to
apply the Caller ID Collection to multiple T1 trunks.