SS7 to SIP Gateway

VOIP Gateway for SIP network to SS7 interconnection

  • up to 16 E1 interfaces
  • up to 480 VoIP channels
  • SS7 (supporting subsystem MTP2, MTP3, ISUP)
  • ISDN PRI, V5.2, R2 CAS, R2 MFC, R 1.5
  • voice codecs G.711, G.723.1, G.726, G.729a/b, GSM
  • registration and authentication – up to 5000 SIP-subscribers
  • fax over G.711, T.38 fax relay
  • Echo Cancellation
  • SNMP monitoring
  • SyncE (option)
  • Single/Dual-redundant 220 VAC or 48/60 VDC Input

SIP to SS7 Gateway (SS7 VoIP gateway) is used in different options of conjugation of VoIP and TDM/PSTN networks for minimization of expenses and reduction of operational costs. Effective integration TDM to NGN and IMS networks.
Possible Titles SS7 Signaling – Signaling System #7, CCS7 Common Channel Signaling System 7, C7, CCITT7, N7, Signalisierungssystem Nummer 7.

SS7 to SIP VOIP Gateway, integration to IP, SS7, MTP2, MTP3, ISUP, G711, G723, G726, G729, T38

Pic 1. SS7 to SIP Gateway Connection Block Diagram.

We offer the SS7/SIP Gateway for upgrading telephone networks featuring multiple SS7 interfaces.
SS7 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
  • R2 CAS
  • R2 MFC
  • R1.5

There are 2 options for using this gateway based on tasks to be solved.

SS7 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 SS7 interface they can be switched to the SoftSwitch using the gateway as indicated on the following figure.

In this case the SS7 interface disconnects from the TDM Switch and connects to the gateway that is connected to the SoftSwitch via the SIP data communications network.

SS7 VOIP Gateway, integration to IP, MTP2, MTP3, ISUP, G711, G723, G726, G729, T38

Pic 2. SS7 to SIP Gateway Connection Diagram

SIP to SS7 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 SS7 interfaces the gateway on the TDM network side looks as the SS7 subscriber node while on the IP network side it looks as the IP Telephone Exchange where IP subscribers register (please see the figure).

SIP to SS7 VOIP Gateway, integration to IP, IMS, NGN, 16E1, V5.2, G711, G723, G726, G729, T38

Pic 3. SIP to SS7 Gateway Connection Diagram

IP-PBX supporting value added services

This functionality allows using 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 V5.2) with SIP accounts of VoIP network with assigned authentication parameters.

Configuring SIP/SS7 gateway and work with it

To operate the web interface you will need any web browser. The web interface of the product supports 2 types of user accounts – “Administrator” and “User”. Description of rights for each type of the account as well as the method of changing the name and password are provided below in this manual.

SS7 VOIP Gateway Configuration

Pic 4. Web interface SIP to SS7 Gateway – Configuration menu

Configuration menu item allows getting access to the control web interface forms that can be used to set up SIP/SS7 Gateway product and save data in the product configuration file. This menu item contains the following subitems: dialplan, modifiers, routes, SIP Accounts, Е1 Links, signaling profiles, SS7 configurations, V5.2 Configurations, E1 Port Settings, users and device settings.

Extended Configuration SS7, SS7 to SIP VOIP Gateway

Pic 5. Web interface SIP to SS7 Gateway – Extended SS7 setting block

Configuration MPT2 setting, SIP to SS7 Gateway

Pic 6. Web interface SIP to SS7 Gateway – MPT2 setting

Configuration SIP Accounts, SS7 VOIP Gateway

Pic 7. Web interface SIP to SS7 Gateway – SIP Accounts

Generally you can easily change all parameters. To learn about the status of the device, TDM or SIP channel, you must go to the “Diagnostics” section.

TDM channels map, SS7 VOIP Gateway

Pic 8. Web interface SIP/SS7 Gateway – TDM channels map

The best advantage is price, because it’s less than competitors have. So the same function, but lower price– the best choice.