Hi , I got your point. You have configured the Telesis Side SS7 and also configured the circuit and Timeslot correctly . You have two 4E1 cards installed at your asterisk server . It seems to me the Signalling cable mismatching . Can you do a test ? 1. Pull all the E1 Cables from 1st 4E1 card 2.Put all the E1 Cables from 1st 4E1 Card to 2nd 4E1 Card and put all the Cables from 2nd 4E1 card to 1st 4E1 Card 3. Check ss7 link is up in asterisk and Telesis. Rgds Mesbah On 5/19/10, Deepika Nijhawan <deepika.chopra at oxygen8.com> wrote: > > Hi Mesbah, > > > > We have telco E1?s connected to Telsis equipment. We have other ISDN > connections between this Telsis and some other Asterisk servers to > send/receive calls on VoIP interconnects. > > > > Now, we have configured 1 trunk on Telsis which is connected to this > asterisk server as SS7. Asterisk is built with libSS7. > > I have already posted my asterisk configuration. > > > > We want to send calls from Telsis to Asterisk or vica-versa over this SS7 > link. > > > > Configuration on Telsis trunk is: > > Signalling Scheme: SS7 ISUP > > Signalling Variant: White Book ISUP > > CRC4: Generate and detect CRC4 > > Location of trunk: Transit > > > > SS7 link configuration on Telsis is like: > > -Near-end point code is defined for this device. > > -Link is created with this trunk using timeslot 16. This link is allocated > to a linkset on which we have defined adjacent point code (which is asterisk > point code). > > -A Route Set is defined with settings: Far end PC = asterisk PC, CIC scheme > = 32, linkset > > > > > > > > --- > > > > Kind Regards, > > > > *Deepika Nijhawan* > > *VoIP Engineer* > > * * > > *Oxygen8* Communications > > *T:* +44(0) 871 434 9151 > > +44(0) 121 620 9151 > > *Email:* deepika.nijhawan at oxygen8.com > > *Skype:* deepika-nijhawan > > *W:* www.oxygen8.com > > > > > > This communication contains information which is confidential and may also > be privileged. It is for the exclusive use of the intended recipient/s. If > you are not the intended recipient/s please note that any distribution, > copying or use of this communication or the information in it is strictly > prohibited. If you have received this communication in error please notify > us by email or by telephone (08082060808) and then delete the email and any > copies of it. This communication is from Oxygen8 Communications UK Ltd - > Company Number 03383285. Registered Address; 12th Floor, Lyndon House, 58-62 > Hagley Road, Birmingham, B16 8PE. VAT Registration Number: 792 4494 89 > > > > > > -- > _____________________________________________________________________ > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > > asterisk-ss7 mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-ss7 > -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.digium.com/pipermail/asterisk-ss7/attachments/20100519/1e66bf34/attachment.htm