> I was asked about this in email:
And YOU are asking for a reply :-)
> * Going by their docs you also need the Network Management Card and
> Total control manager. More stuff to buy. I can't compare price as,
> again, they don't seem to put that up anywhere.
Hey! But they HAVE a fine SNMP solution! And you DON'T need this stuff to
configure the modem/netserver/PRI-card. We are waiting a long time now, to have
SNMP from Livingston also! BTW: I like the feature USR is giving the costumers
with their NMC!
>
> * The basic feature set sounds oddly like ComOS 3.1.4s features - not
> surprising as we licensed them ComOS up to 3.1.4. But I don't see
> later features listed - no listing of RFC 1877 DNS in PPP for
> instance, yet the list just about everything PPP does. (Wow, PPP does
> IP address negotiation and assignment?! Give me a break, why did they
> list that stuff...)
MLPPP, PPTP,
> * We support more switch types - USR does AT&T 4ESS, AT&T 5ESS,
> Northern Telecom DMS-100 Standard, and Northern Telecom DMS-250. We
> do AT&T 4ESS, AT&T 5ESS, DMS-100, ESWD, Net5, VN2, VN3, VN4, 1TR6,
> NTT, and KDD.
USR is working on this, we are looking who is faster with a released version
:-)))))
> * They support D4 or ESF frame formats - we do D4, ESF, CRC4, or FAS.
>
> * They support B8ZS line coding - we do AMI, B8ZS, or HDB3.
>
> * They support ITU-T Q.921, Q.931, and I.451 - we do I.431, Q.921,
> Q.930, Q.931
>
> * To be fair they do both V.110 and V.120 Rate Adaptation, we do V.120
No comments because of a NDA :-)
>
> * Both units have built in CSU/DSUs.
>
> * Quote "10 PRI spans or 240 simultaneous users within a single
> chassis." <http://www.usr.com/business/30422.html> Now on the PDF it
> says "10 PRI spans, servicing up to 230 simlutaneous callers."
> Ok... but the illustration shows 17 slots on the rack. So, 1 for a
> dual PRI card, 1 for the NETServer PRI Card, one for the Network
> Management Card. That leaves 14 slots.
1x NMC (dedicated 17th slot)
2x Powersupplies (1 Backup - Do you have backup PS?)
16x Application slots, in which you can put Modem/PRI/X.25/Netserver cards.
That means, that you are free to put in, what fits. You can have (in europe,
because of E1) 4x Dual-PRI with 8 spanlines, which are 240 lines, with 4
Netservers 60. Than you have 8 slots for modems=24 analogports.
> The modem cards are 4 modems
> each, so that is 56 modems maximum. 8 more than you need - unless you
> are in Europe, then you need 60. (Actually, it isn't clear if that
> 18th slot is a real slot, it is wider than the rest, maybe the power
> supply or something. Any one with USR experience have the answer?)
the 18th and 19th slot are for PSs.
May the force be with you,
Holger