Sorry for double post - google shortcut and botched up keystrokes made me send premature All - wanted to say thanks for enlightening me. Been a very interesting thread. Seems like there's a lot of legacy technology, regulations, and thinking that we have to take into account in planning. The original thread was on geographical redundancy - guess it should have been more specific: * redundancy for an ITSP only provider that's facilities based reseller (that being someone who is not a true CLEC but uses CLEC(s) for IP <-> TDM conversion to get on the PSTN) - SIP peering redundancy via IP - local call processing and media gateway redundancy as well as geographical - IP reachability to CPE and CPE redundancy * redundancy for CLEC/Carrier - some or all of the above and - sounds a bit more complicated when you add on SS7 requirements - what else? Alex - to answer you directly - ITSP with either I guess would be relevant. Although if I use a wholesale provider I'd expect that they are both locally and geographically redundant (or I wouldn't use them unless business requirements or financial situation dictated outage time is OK or worth the risk).
On Wed, Aug 12, 2009 at 7:15 AM, Alex Balashov <abalashov at evaristesys.com>wrote:
Alex Balashov wrote:
If I remember correctly tho, in order to connect to the tandems you had
to be able to provide ss7 services. We got all of our ports out of a DMS500, but I do remember people using something from cisco to emulate a switch (SCC maybe?) and back end all the dial traffic into 5800's....
There were lots of switch-lite solutions (signaling gateways) that were popular during the dialup boom. The Cisco PGW was very popular among them. All of these could control media gateways via H.248/MEGACO or MGCP, and the TNTs did H.248. Just very basic SS7 ISUP->media gateway control was needed to get modem pools going.
And the Cisco AS-series stuff is MGCP, I believe.
-- Alex Balashov Evariste Systems Web : http://www.evaristesys.com/ Tel : (+1) (678) 954-0670 Direct : (+1) (678) 954-0671 _______________________________________________ VoiceOps mailing list VoiceOps at voiceops.org https://puck.nether.net/mailman/listinfo/voiceops