TAPIClass tapi = new TAPIClass();
    tapi.Initialize();


    ITCollection tc = (ITCollection)tapi.Addresses;
    ITAddress line = null;
    for (int i=1; i<=tc.Count; ++i) 
    {
       ITAddress a = (ITAddress)tc[i];
           //далее вытаскиваю свойсва адреса.

        }

IS>>Т.е. Samsung-кий TSP вообще не вытягивается через енумерацию

IS>>    TAPIClass tapi = new TAPIClass();
IS>>    tapi.Initialize();


IS>>    ITCollection tc = (ITCollection)tapi.Addresses;
IS>>    ITAddress line = null;
IS>>    for (int i=1; i<=tc.Count; ++i) 
IS>>    {
IS>>       ITAddress a = (ITAddress)tc[i];
IS>>           //далее вытаскиваю свойсва адреса.

IS>>        } 
IS>>

C:\TAPI\enumtapi\code\TAPI\enumtapi\Debug>EnumTapi.exe
Installed TAPI Version is 2.2
Installed TAPI Service Providers
<- dwPermanentProviderID
<- ProviderFilename
0x00000001 unimdm.tsp
0x00000002 kmddsp.tsp
0x00000003 ndptsp.tsp
0x00000004 ipconf.tsp
0x00000005 h323.tsp
0x0000000A C:\WINNT\system32\sctsp32.tsp — это и есть Samsung TSP
0x0000000B RemoteSP.TSP — вот это тоже интересно что

Installed TAPI line Devices
<- dwDeviceID
| <- Max dwAPIVersion
| | <- dwNumAddresses
| | | <- dwPermanentLineID
| | | | <- Capable of making voice comm/datamodem calls?
| | | | | <- Capable of making automated voice calls?
| | | | | | <- Call in progress?
| | | | | | | <- Any application waiting for calls?
| | | | | | | | <- Service Povider — Line Device Name
V V V V V V V V
0 , 1.3, 1, 0x00000001, N, N, ?, ?, kmddsp.tsp — RAS VPN Line 0
1 , 2.2, 1, 0x03667F66, N, N, N, N, ndptsp.tsp — ╠шэшяюЁЄ WAN (L2TP)
2 , 2.2, 1, 0xBFB8CAB8, N, N, N, N, ndptsp.tsp — LPT1
3 , 2.2, 1, 0x00040000, N, N, N, N, ipconf.tsp — IPCONF LINE
4 , 2.2, 1, 0x00050000, N, N, N, N, h323.tsp — ╦шэш  H323