распределение звонков по каналам в группе zaptel

In the Zap Channel Module's configuration file (zapata.conf), you can define groups of Zap channels that get treated as a single channel as far as the Dial command is concerned. You specify which of four methods the Zap channel module is to use to select a non-busy channel from the channel group by prefixing the group number with one of the letters g, G, r, or R:

g: select the lowest-numbered non-busy Zap channel (aka. ascending sequential hunt group).
G: select the highest-numbered non-busy Zap channel (aka. descending sequential hunt group).
r: use a round-robin search, starting at the next highest channel than last time (aka. ascending rotary hunt group).
R: use a round-robin search, starting at the next lowest channel than last time (aka. descending rotary hunt group).

The round-robin searches make the Zap channel module start looking for an available channel from a different channel number each time. For each channel group, the Zap channel module keeps track of the last round-robin start point, and this time starts checking availability from either the next (lowercase r)) or the previous uppercase R channel in the group. Which channel it actually finds available (if any) does not affect the starting point for the next round-robin search. Calls to the Dial command using ordinary (g or G) group selections do not affect future round-robin starting points either.

For example, if you have defined channel group 2 as containing Zap channels 1, 2, 5 and 8, and the last round-robin search for this group (group 2) began searching from channel 5, this is the order of searching that the Zap channel module will use for the four possible selection methods:

Dial(Zap/g2...): Looks in order 1, 2, 5, 8
Dial(Zap/G2...): Looks in order 8, 5, 2, 1
Dial(Zap/r2...): Looks in order 8, 1, 2, 5
Dial(Zap/R2...): Looks in order 2, 1, 8, 5

Соответственно, что бы случайным образом выбирать канал в группе нужно использовать команду Dial(Zap/r0/1234567).