Hi Danny,
dont mix ppp and p2p...
pp = point to point pmp = point to multipoint (both are ISDN connection configurations)
ppp = point to point protocol a higher level protocol for data transmission etc.
Of which type your ISDN connection is, is usually easy to decide looking at your phonenumbers
A PMP has MSNs (usually (in Germany) up to 10 with EuroISDN) There may be up to (I'm not sure...) 8 devices connected to one PMP ISDN connection.
A PP has one base number with DIDs (like 234567-0 234567-10 234567-11 etc). There may only be one device connected to the ISDN connection. And with PP you can have several BRIs or PRIs 'sharing' the same number.
Greetings
Bjoern
Danny Zak schrieb:
Hello;
we are looking to replace our current PBX with a *-box; it is connected to ONE ppp isdn connection that is terminated by the NC. We got on this box 4 msn's configured.
currently we are working with pstn fxo's behind the PBX; it works but we can't use the CSID information behind it. We want to migrate and keep the MSN's to decide routing in combination with the CID.
That's why we want to replace all our phones (8) with voip ones (or by using a fxs's)
Reading all information i assume the following
- we need a ACTIVE ISDN card; these are 5/6 times more expensif that
passive ones.
I always assumed there was only PPP and PMP; but it seems -
reading the specs of the av. isdn card - that there is also
multilink PPP. Will a multilink PPP also support a PPP; or is
this just a other way to describe a PMP ?
- how can i checke the number that is being dialed by the caller to
reachh the * box (so one of the 4 msn's). I have seen dialplans
making use of the CALLERIDNUM; but what do i need to query for the
called num ?
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