cisco 2921 router, has two voice PRI lines connected to it from AT&T, and then PRI tie lines to our internal PBX. when I do a "show call active voice summary", the "telephony call-legs" number includes open channels on the carrier PRI side and on the tie line side. the tie lines generally stay open all day because our Customer service reps leave their phones off the hooks, so it's not exactly a 1:1 ratio of AT&T lines in use vs. internal tie lines in use.
i'm looking for a command to tell me *only* how many of the incoming voice PRI lines from AT&T are in use. really i'm looking for an SNMP oid that tells me that.
