I have 2 HFC cards running NT mode, with 2 phones connected to each.
Individual internal dialing works fine.
However - if I issue a group Dial command to 2 phones on the same interface,
(type/identifier separated by ‘&’ e.g. Dial(Zap/g1/202&Zap/g1/203)),
then - if the first listed phone (202) is busy - the other one won’t ring either.
If the second phone (203) is busy - then the first one will ring.
If a pick up 200 and call a group consisting of all 4 phones
( Dial(zap/g0/200&zap/g0/201&zap/g1/202&zap/g1/203) )
then of course 200 is busy so 201 won’t ring either, but both phones on zap/g1 will ring.
There seems to be kind of a sequential bail-out on a per-interface basis.
If the first phone is busy, the entire interface is considered busy?
Is this an issue with the zap channel, or the zaphfc driver ?
Or is there anything I could do in my dialplan to avoid this?