ISDN PRI to SIP Gateway

VoIP Gateway for migration of TDM network into NGN and IMS

integration TDM and IP networks, ISDN PRI to SIP Media Trunk Gateway, SIP trunk, E1 stream, tdm switch over ip, 4 8 16 E1, SS7, ISDN PRI, V5.2, V5.1, R2 CAS, R2 MFC, R2 DTMF, voice codecs G.711, G.723, G.726, G.729
  • up to 16 E1 interfaces
  • up to 480 VoIP channels
  • V5.1, SS7, ISDN PRI, V5.2, R2 CAS, R2 MFC
  • SIP, RTP, RTCP, TCP, UDP
  • voice codecs G.711, G.723, G.726, G.729
  • registration and authentication – up to 5000 SIP-subscribers
  • fax over G.711, T.38 fax relay
  • Single/Dual-redundant 220 VAC or 48/60 VDC Input
SIP to ISDN PRI Gateway (ISDN PRI VoIP gateway) is used in different options of conjugation of VoIP and TDM/PSTN networks for minimization of expenses and reduction of operational costs. Support of all types of signaling being used on the PSTN network allows using the equipment for reconstruction and upgrade of all types of automatic telephone exchange used on a network.
Effective integration TDM to NGN and IMS networks.
Possible Titles ISDN PRI Signaling – Euro ISDN, E-DSS1, simply EDSS1.

integration TDM and IP networks, ISDN PRI to SIP Media Trunk Gateway, SIP trunk, E1 stream, tdm switch over ip, 4 8 16 E1, SS7, ISDN PRI, V5.2, V5.1, R2 CAS, R2 MFC, R2 DTMF, voice codecs G.711, G.723, G.726, G.729, block diagram

Pic 1. ISDN PRI to SIP Gateway Connection Block Diagram.

ISDN PRI to SIP Gateway supports the following signaling protocols:

  • SS7 (or Signaling System #7, CCS7 Common Channel Signaling System 7, C7, CCITT7, N7, Signalisierungssystem Nummer 7);
  • ISDN PRI (or Euro-ISDN, E-DSS1, simply EDSS1);
  • V5.2;
  • V5.1;
  • R2 CAS;
  • R2 MFC;
  • R2 DTMF.

IP-PBX supporting value added services

This functionality allows to use the gateway as IP-PBX that can register up to 1000 SIP subscribers and provide them with value added services. In addition the gateway software allows to “display” TDM network subscribers (for example, subscribers of remote exchange capacities connected to the gateway over ISDN PRI with SIP accounts of VoIP network with assigned authentication parameters.

Distinctive features

  • Support all types of alarm system being used on TDM/PSTN network;
  • Possibility of implementation of IP-TDM, TDM-IP and TDM-TDM connections

ISDN PRI to SIP Gateway

Option 1 is used when it is required to replace the TDM Switch with the SoftSwitch. If multiple subscriber nodes are connected to the TDM Switch over the DSS1 (Digital Subscriber System No. 1) interface they can be switched to the SoftSwitch using the gateway as indicated on the following figure.

In this case the DSS1 interface disconnects from the TDM Switch and connects to the gateway that is connected to the SoftSwitch via the SIP data communications network.

integration TDM and IP networks, ISDN PRI to SIP Media Trunk Gateway, SIP trunk, E1 stream, tdm switch over ip, 4 8 16 E1, SS7, ISDN PRI, V5.2, V5.1, R2 CAS, R2 MFC, R2 DTMF, voice codecs G.711, G.723, G.726, G.729, interconnection diagram

Pic 2. ISDN PRI to SIP Interconnection Diagram

SIP to ISDN PRI Gateway

Option 2 is used when it is required to connect VoIP subscribers from the local network to the PSTN number capacity. If the operator has the existing TDM Switch with free ISDN PRI interfaces the gateway on the TDM network side looks as the DSS1 subscriber node while on the IP network side it looks as the IP Telephone Exchange where IP subscribers register (please see the figure).

integration TDM and IP networks, ISDN PRI to SIP Media Trunk Gateway, SIP trunk, E1 stream, tdm switch over ip, 4 8 16 E1, SS7, ISDN PRI, V5.2, V5.1, R2 CAS, R2 MFC, R2 DTMF, voice codecs G.711, G.723, G.726, G.729, interconnection diagram

Pic 3. SIP to DSS1 Interconnection Diagram

Network Interfaces TDM
SIP and RTP
Management
up to 16 E1 links
up to 480 VoIP channels, 10/100 BASE-T Ethernet
Fast Ethernet, RS-232
Signaling Protocols IP
PSTN
SIP, RTP, RTCP, TCP, UDP
SS7, ISDN PRI (DSS1), V5.2, V5.1, R2 MFC, CAS
Feature Support Voice codecs
DTMF
FAX
Registration and Authentication
Registration
G.711, G.723, G.726, G.729
RFC2833, SIP INFO, RFC 2976
fax over G.711, T.38 fax relay
up to 5000 SIP-subscribers
SIP-trunks
Power Single/Dual-redundant 220 VAC or/and 48/60 VDC Input
Up to 24W Power consumption
Operating Environment Operating temperature
Humidity
from 0°С to +60°С
up to 80% at +25°С
Hardware System Type
Dimensions
Board
1U high, 19″ wide rack mountable

SIP/E1 Gateway Lite:

  • SIP/E1 Gateway Lite (2Е1, 60 SIP channels, G.711 codec, echo G.168)
  • SIP/E1 Gateway Lite (4Е1, 120 SIP channels, G.711 codec, echo G.168)
  • SIP/E1 Gateway Lite (8Е1, 120 SIP channels, G.711 codec, echo G.168)
  • SIP/E1 Gateway Lite (12Е1, 120 SIP channels, G.711 codec, echo G.168)
  • SIP/E1 Gateway Lite (16Е1, 120 SIP channels, G.711 codec, echo G.168)

SIP/E1 Gateway:

  • SIP/E1 Gateway (2Е1, 60 SIP channels, G.711, G.726, G.729, T38 codecs, G.168)
  • SIP/E1 Gateway (4Е1, 120 SIP channels, G.711, G.726, G.729, T38 codecs, G.168)
  • SIP/E1 Gateway (8Е1, 240 SIP channels, G.711, G.726, G.729, T38 codecs, G.168)
  • SIP/E1 Gateway (12Е1, 360 SIP channels, G.711, G.726, G.729, T38 codecs, G.168)
  • SIP/E1 Gateway (16Е1, 480 SIP channels, G.711, G.726, G.729, T38 codecs, G.168)
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