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R2 / CAS Signalling in SS7, VoIP or ISDN networks
R2 signaling 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.
Contact us for any specific R2 country variant protocol support.
R2 Signalling in SS7/ISDN Networks
To connect over PSTN based TDM SS7 or ISDN there are 3 models 1000, 2000 and 8000. Click model configurations below for details.
R2 Signalling in VoIP Networks
To connect over SIP or H.323 there are 3 models 1000, 2000 and 8000. Click model configurations below for details.
R2 to SS7/ISDN Configurations
| 1000 |
This entry level product is a fully featured R2 to SS7/ISDN signalling solution, scaling from 2 E1s to 72 E1s |
| 2000 |
Mid range solution with support for STM-1 and DS3, scaling from 16 E1s to 224 E1s |
| 8000 |
A high performance blade server, supporting STM-1 and DS3 interfaces. Scaling from 16 E1s to 1000 E1/T1s |
R2 to VoIP Configurations
| 1000 |
This entry level product is a fully featured R2 to VoIP signalling solution, scaling from 1 E1s to 72 E1s |
| 2000 |
Mid range solution with support for STM-1 and DS3, scaling from 8 E1s to 224 E1s |
| 8000 |
A high performance blade server, supporting STM-1 and DS3 interfaces. Scaling from 16 E1s to 1000 E1/T1s |
What is R2 & CAS Signalling?
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R2 CAS signalling is still in common use today (most widely MFC R2), but has been superceded by other forms of signalling such as ISDN and SS7.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.
R2 / CAS Protocols
| Country | Protocol | Protocol Type |
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| Argentina | R2 CAS | CAS |
| Australia | TS038, P2 | CAS |
| Belgium | National R2, National R2 DTMF | CAS |
| Brazil | MFC R2 | CAS |
| Canada | T1 Robbed bit | CAS |
| Chile | MFC R2 | CAS |
| China | R2 | CAS |
| Columbia | R2 | CAS |
| Croatia | R2 | CAS |
| Czech Republic | R2, MFC R2 | CAS |
| Denmark | National MFC R2 | CAS |
| Egypt | MFC R2 | CAS |
| Finland | R2 | CAS |
| France | MF R1 Socotel, ISDN | CAS |
| Greece | OTE 4, OTE 2 | CAS |
| Hong Kong | HKTA 2015, HKTA 2018 Robbed bit | CAS |
| India | MFC E&M, MFC R2 | CAS |
| Indonesia | R2 (Q.421), SMFC R2 | CAS |
| Iran | R2 | CAS |
| Israel | MFC R2 | CAS |
| Italy | I701 | CAS |
| Jordan | R2 | CAS |
| Korea | R2 | CAS |
| Kuwait | R2 | CAS |
| Latvia | MFC R2 | CAS |
| Country | Protocol | Protocol Type |
|---|
| Malaysia | MFC R2 | CAS |
| Malta | MFC R2 | CAS |
| Mexico | R2 | CAS |
| Netherlands | ALS70D, MFC R2 | CAS |
| Norway | National MFC R2 | CAS |
| Peru | MFC R2 | CAS |
| Philippines | R2 | CAS |
| Poland | MFC R2 | CAS |
| Portugal | MFC R2 | CAS |
| Sierra Leone | MFC R2 | CAS |
| Singapore | ISDN, MFC R2 | CAS |
| South Africa | MFC R2 | CAS |
| Spain | MF R1 Socotel | CAS |
| Sweden | CAS extension EL7, P8 | CAS |
| Taiwan | MF R1 | CAS |
| Thailand | National R2 DTMF | CAS |
| Turkey | R1 | CAS |
| UK | BT/MCL Interconnect
BT Callstream, PD1 |
CAS |
| USA | T1 Robbed bit | CAS |
Worldwide
(ex USA) | E1 line side CAS | CAS |
| Worldwide | MFC 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 |
Do you require specific country variant support? Click here
SS7 Protocols
| ISUP | ANSI ISUP - T1.113.1 to T1.113.4 |
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| GR-246, Telcordia ISUP (T1.113.1 to T1.113.4) |
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| ITU ISUP - Q.761-Q.764 Blue & White Book |
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| TTC - JT- Q761-Q764 |
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| ETSI ISUP- EN 300 356-1 |
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| China YDN 038 China |
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| French SSURF (SPIROU) |
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| Australia ACIF AG500 |
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| Belgium C2122 Ed.2 |
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| Finland SFS 5779 |
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| Germany ZZN7 3.0.0 |
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| Hong Kong HKTA 2202 |
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| Italy Specifica Tecnica N.763 |
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| Mexico NOM-112SCTI |
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| Sweden 8211-A335, 8221-A325 |
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| UK PNO-ISC/SPEC/007 |
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| Russia ISUP-R |
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| Kazakhstan ISUP-K |
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| New Zealand PTC |
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| Lithuanian |
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| Brazilian 210-110-724 |
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| Swiss |
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| Pakistan |
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| Spanish |
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| TUP | ITU TUP Q721-Q725 |
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| SSUTR2 V11-T 1998 |
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| Chinese GF 001- 9001 |
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| Brazil |
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| IUP | UK PNO-ISC/SPEC/006 |
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| SCCP | ITUT Q711-Q714 |
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| JT-Q711-G714 |
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| ETSI ETS 300 589 |
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| ANSI T1.112 |
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| TCAP | CNAM ANSI T1.641-1995 (R2004) Calling Name Identification Presentation |
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| LNP GR-1936-CORE |
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VoIP Protocols
| SIP | RFC 3261 Session Initiate Protocol |
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| RFC 2976 SIP INFO Method |
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| RFC 3398 ISUP-SIP Mapping |
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| RFC 3515 Refer Method |
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| RFC 3578 Overlap |
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| RFC 2327 Session Description Protocol |
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| RFC 3581 An Extension to the Session Initiation Protocol (SIP) for Symmetric Response Routing |
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| RFC 3665 Session Initiation Protocol (SIP) Basic Call Flow Examples |
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| RFC 3666 Public Switched Telephone Network (PSTN) Call Flows |
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| RFC 3892 Referred-By Mechanism |
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| RFC 3891 "Replaces" Header |
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| SIP-T | RFC 3372 Session Initiation Protocol for Telephones (SIP-T) |
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| SIP-I | ITU Q.1912 for ISUP/C7-to-SIP inter working |
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| H.323 | ITU Version 2 and 4 |
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| Fast and Slow Start |
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| Gateway and Gatekeeper interconnect |
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ISDN Protocols
| ISDN | AT&T 41459 (AT&T ISDN PRI) |
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| (Bellcore GR-1268) |
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| ETSI PRI (ETS 300 102) |
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| ETSI QSIG (ETS 300 172) |
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| ITUT PRI (Q931,DSS1) |
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Presentation featuring R2 Signalling in VoIP network solution for single, higher capacity and large scale deployments
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