Voip Gateways

Voip Gateways

VOIPBOX SS7

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VoIP_Gateways_02.pdf
VoIPBOX_SS7.pdf



Interfaces

+ E1
+ CRC4 / double frame
+ 30 bearer channels per E1

 

Signaling, MTP Level 2

+ Q.703, test specification
+ Q.781
+ Signaling at configurable timeslot
+ Basic error correction
+ Normal and emergency alignment


Signaling, MTP Level 3

+ Q.704, test specification
+ Q.782
+ Only one point code
+ Implementation as signaling endpoint (SEP)
+ Associated signaling
+ Support of link sets
+ Loadsharing within link sets
+ Passive support of maintenance functions


Signaling, ISUP

+ Q.761-Q.764, test specification Q.784.1
+ ISUP V2 (Q.767)
+ All bearer services
+ (speech, audio 3.1 kHz,
+ 64 kbit/s unrestricted, ...)
+ En-block and overlap sending


Signaling, ISUP (cont'd)

+ Suspend / resume
+ T7 (wait to alert)
+ T9 (wait to answer)
+ Circuit selection procedure
+ as per Q.764 method 1
+ Passive support of continuity check
+ Remote user interface for circuit group blocking,circuit group unblocking, group reset circuit


Supplementary Services

+ Test specification Q.785
+ CLIP / CLIR
+ COLP / COLR
+ Subaddressing
+ User-to-User info 1
+ User-to-User info 3


Remote-Maintenance


+ Functions, ISUP
+ Reset circuit
+ Circuit group reset
+ Block / unblock circuit

Remote-Maintenance

+ Functions, MTP Level 3
+ Activate / deactivate link
+ Activate / deactivate linkset
+ Inhibit / uninhibit link