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R2/ CAS in SS7, VoIP or ISDN NetworksR2/ CAS in SS7, VoIP or ISDN Networks

R2 signalling interconnect is available as a flexible range of options over SIP, H.323, TDM SS7 or ISDN, within the SVI product range. Select your requirements from the SS7/ISDN or VoIP options below.

R2 Signalling in SS7/ ISDN Networks

R2 Signalling in VoIP Networks

To connect over PSTN based TDM SS7 or ISDN there are 3 models 1000, 2000 and 8000.

R2 Signalling in VoIP Networks

R2 Signalling in SS7/ ISDN Networks

To connect over SIP or H.323 there are 3 models 1000, 2000 and 8000.


R2 to SS7/ ISDN Configurations

R2 to VoIP Configurations

Functionality

R2 signalling is part of the CAS (Channel Associated Signalling) protocols where dedicated channels are assigned to each traffic channel. R2 or Region Two signalling was originally envisaged to apply to Europe where R1 or Region One would apply to the US. Over time the R2 signalling protocols have become a subset of a large number of international protocol variants, which often span national
boundaries due to a varying span of adoption.

R2 CAS signalling is still in common use today (most widely MFC R2), but has been superceded by other forms of signalling such as ISDN and SS7.

The SVI_MG and SVI_9225 products provide a solid platform for fully redundant telecoms grade R2 / CAS support, allowing carriers to benefit integrating over SIP, H.323, TDM SS7 or ISDN PRI.

CountryProtocolProtocol Type
ArgentinaR2 CASCAS
AustraliaTS038, P2CAS
BelgiumNational R2, National R2 DTMFCAS
BrazilMFC R2CAS
CanadaT1 Robbed bitCAS
ChileMFC R2CAS
ChinaR2CAS
ColumbiaR2CAS
CroatiaR2CAS
Czech RepublicR2, MFC R2CAS
DenmarkNational MFC R2CAS
EgyptMFC R2CAS
FinlandR2CAS
FranceMF R1 Socotel, ISDNCAS
GreeceOTE 4, OTE 2CAS
Hong KongHKTA 2015, HKTA 2018 Robbed bitCAS
IndiaMFC E&M, MFC R2CAS
IndonesiaR2 (Q.421), SMFC R2CAS
IranR2CAS
IsraelMFC R2CAS
ItalyI701CAS
JordanR2CAS
KoreaR2CAS
KuwaitR2CAS
LatviaMFC R2CAS
CountryProtocolProtocol Type
MalaysiaMFC R2CAS
MaltaMFC R2CAS
MexicoR2CAS
NetherlandsALS70D, MFC R2CAS
NorwayNational MFC R2CAS
PeruMFC R2CAS
PhilippinesR2CAS
PolandMFC R2CAS
PortugalMFC R2CAS
Sierra LeoneMFC R2CAS
SingaporeISDN, MFC R2CAS
South AfricaMFC R2CAS
SpainMF R1 SocotelCAS
SwedenCAS extension EL7, P8CAS
TaiwanMF R1CAS
ThailandNational R2 DTMFCAS
TurkeyR1CAS
UKBT/MCL Interconnect
BT Callstream, PD1
CAS
USAT1 Robbed bitCAS
Worldwide
(ex USA)
E1 line side CASCAS
WorldwideMFC R2 Q.421/Q.441
SS5 CCITT (C5)
Decadic CAS Generic use with PBXs
E&M Type A Ericcson DC5 and E&M options
CAS