(above is MZ responding to "jon-lists")
And, you almost certainly should order the second, backup, D channel
in the NFAS group, if you go that way. [Personally, I would wait at
least until 3.9 final to consider doing this, since if a beta issue
develops in 3.9, and you've had the telco make the change, you have
"problems"...it's not an issue for us right now since we have several
CT1s and one PRI.]
If you have only one D channel, then a failure in that T1 puts ALL
the lines in the group down...with the second D channel as backup (in
another line), you survive that single-line failure.
So...you have one PRI with the working D channel, one with the backup
D channel, and in the OTHERS you gain one channel per PRI (up to the
group maximum).
I haven't read the details, but this should be like multi-chassis
multi-link: all the involved PM3s on the same ethernet, so they can
exchange information (so it's likely you can't tie remotes to locals
in the same group).
Query: can backhauls and locals participate together? (My guess is
no, but this is one of millions of issues I'm not qualified to guess
about.)
--john
-- John Baxter jwblist@olympus.net Port Ludlow, WA, USA Give a man a fish and you feed him for a day. Teach him to fish, and you get rid of him for the weekend. - To unsubscribe, email 'majordomo@livingston.com' with 'unsubscribe portmaster-users' in the body of the message. Searchable list archive: <URL:http://www.livingston.com/Tech/archive/>