Pack Configuration or wvrteleconf can be used to define a working system at most sites, but it is possible that it does not include all possible combinations of telephony hardware and protocols. If configuration of the packs fails to provide a working system at your site, someone who understands telephony must then review and update individual system parameters by using Configuration —> System Configuration (see Defining the telephony environment (System Configuration)).
If you use System Configuration to change many of the values that Pack Configuration has set, do not return to Pack Configuration; it might reset some of the settings that you made in Systems Configuration. Use Configuration —> Pack Configuration —> Browse to display the existing values of telephony-related parameters. With Browse, you cannot accidentally change the values.