ELTEX SMG-4 - Page 180

180 SMG digital gateway
Device Configuration Example via CLI
Objective
Configure SS7-SIPT transit.
Source Data
A stream from the opposite PBX is physically connected to E1 stream 0 at SMG4.
SS7 Signalling Parameters
 OPC=67;
 DPC=32;
 associated signalling mode, i. e. the same DPC for both MTP3 and ISUP;
 signalling channel SLC = 1 in the channel interval 1;
 CIC numbering from 2 to 31 for channels from 2 to 31 respectively;
 channel engagement order—sequential forward even (respectively, to exclude mutual channel
engagement, the channel engagement order should be assigned on the opposite side, e. g.
sequential back odd).
SIP-T Signalling Parameters
 IP address of the communicating gateway—192.168.16.7;
 UDP port for SIP-Т signalling reception of the communicating gateway—5060;
 number of simultaneously allowed sessions—25;
 packetisation time for G.711 codec—30 ms;
 DTMF signal transmission during the established session according to RFC2833, payload type for
RFC2833 packets—101.
Routing
 route to SS-7 by trunk group 0;
 route to SIP-T by trunk group 1;
 transition to SS-7 is performed by 7-digit numbers beginning from 6, 7, 91, 92, 93;
 transition to SIP-T is performed by 7-digit numbers beginning from 1, 2, 3;
 all SS-7 signalling messages are transferred by transit.
Configuration via CLI
SS-7 Signalling Configuration
SMG4> config // Enter the configuration mode
SMG4-[CONFIG]> new linkset // Create a new line group (linkset)
NEW 'LINKSET' [00]: successfully created
SMG4-[CONFIG]> linkset 0 // Enter the linkset configuration mode
Entering Linkset-mode.
SMG4-[CONFIG]-LINKSET[0]> chan_order even_successive_forward
// Select the channel engagement order—sequential forward even
Linkset[0]. Set chan_order '6'
SMG4-[CONFIG]-LINKSET[0]> DPC ISUP 32 // Define a code for opposite ISUP signalling point
Linkset[0]. Set DPC '32'
SMG4-[CONFIG]-LINKSET[0]> OPC 67 // Define a code for own signalling point