Re: GMSC development problem
Dear Andreas Yeah , you are right. We need TCAP and MAP layer and unfortunately the openSS7 is not a complete solution. Now what can we do ? One approach is using openSS7 API and completing it for our purpose (developing a SMSC without getting involved in the SS7 details). Is there any better approach ? (e.g. buying an high level API with MAP) Thanks bye On Mon, 15 Oct 2001, Andreas Fink wrote: On Mon, Oct 15, 2001 at 04:41:16AM -0300, Hojjat Sheikhattar wrote: I am working on a project to develop a GMSC for short message service. I have had a general study on the SS7 and the GSM-MAP. Now I should select a solution for communicating with the MSC and the HLR (note that the physical layer is E1). I don't want to get involved in the SS7 details and even MAP details. Do you know which solution is suitable (in terms of price and development costs) for me? Any links? Any comment? If you want to link to an MSC or HLR you'll need to use SS7 etc. Have a look at www.openss7.org, however it isn't approved (or it wasn't last time I looked) and your unlikely to get a SS7/C7 interconnect to any operator. I believe HP make an SS7 stack for HP/UX which people like Nokia license, however it isn't cheap. I've looked into OpenSS7 myself but you can easily forget it for a long while for that purpose. First, its far from stable at the current time, but more importantly it doesnt implement any higher level protocols. Its only MTP2 MTP3 and SCP. For operation as GSM SMSC it would need TCAP and GSM-MAP too and they arent written just like that over night. OpenSS7 more takes care of the physical lower layers. Furthermore there are variants of SS7 in every country (they mainly differ in ISUP however, the protocol in SS7 for voice call setups teardowns) but you have to be prepared to adapt the code to every single country you're dealing with because you have to certify the box there. This easily can mean you have to go through a few thousand tests (I've done that myself once and its very time consuming).
RE: GMSC development problem
I am working on a project to develop a GMSC for short message service. I have had a general study on the SS7 and the GSM-MAP. Now I should select a solution for communicating with the MSC and the HLR (note that the physical layer is E1). I don't want to get involved in the SS7 details and even MAP details. Do you know which solution is suitable (in terms of price and development costs) for me? Have a look at http://www.openss7.org/ - they have an open source SS7 stack which you may be interested in. It doesn't have MAP unfortunately :-(
Re: GMSC development problem
On Mon, Oct 15, 2001 at 04:41:16AM -0300, Hojjat Sheikhattar wrote: I am working on a project to develop a GMSC for short message service. I have had a general study on the SS7 and the GSM-MAP. Now I should select a solution for communicating with the MSC and the HLR (note that the physical layer is E1). I don't want to get involved in the SS7 details and even MAP details. Do you know which solution is suitable (in terms of price and development costs) for me? Any links? Any comment? If you want to link to an MSC or HLR you'll need to use SS7 etc. Have a look at www.openss7.org, however it isn't approved (or it wasn't last time I looked) and your unlikely to get a SS7/C7 interconnect to any operator. I believe HP make an SS7 stack for HP/UX which people like Nokia license, however it isn't cheap. Steve -- NetTek Ltd tel +44-(0)20 7483 1169 fax +44-(0)20 7483 2455 Flat 2,43 Howitt Road, Belsize Park,London NW3 4LU mobile 07775 755503 Epage [EMAIL PROTECTED] [body only]
Re: GMSC development problem
On Mon, Oct 15, 2001 at 04:41:16AM -0300, Hojjat Sheikhattar wrote: I am working on a project to develop a GMSC for short message service. I have had a general study on the SS7 and the GSM-MAP. Now I should select a solution for communicating with the MSC and the HLR (note that the physical layer is E1). I don't want to get involved in the SS7 details and even MAP details. Do you know which solution is suitable (in terms of price and development costs) for me? Any links? Any comment? If you want to link to an MSC or HLR you'll need to use SS7 etc. Have a look at www.openss7.org, however it isn't approved (or it wasn't last time I looked) and your unlikely to get a SS7/C7 interconnect to any operator. I believe HP make an SS7 stack for HP/UX which people like Nokia license, however it isn't cheap. I've looked into OpenSS7 myself but you can easily forget it for a long while for that purpose. First, its far from stable at the current time, but more importantly it doesnt implement any higher level protocols. Its only MTP2 MTP3 and SCP. For operation as GSM SMSC it would need TCAP and GSM-MAP too and they arent written just like that over night. OpenSS7 more takes care of the physical lower layers. Furthermore there are variants of SS7 in every country (they mainly differ in ISUP however, the protocol in SS7 for voice call setups teardowns) but you have to be prepared to adapt the code to every single country you're dealing with because you have to certify the box there. This easily can mean you have to go through a few thousand tests (I've done that myself once and its very time consuming). -- Andreas Fink Fink-Consulting -- Tel: +41-61-6932730 Fax: +41-61-6932729 Mobile: +41-79-2457333 Address: A. Fink, Schwarzwaldallee 16, 4058 Basel, Switzerland E-Mail: [EMAIL PROTECTED] Homepage: http://www.finkconsulting.com -- Something urgent? Try http://www.smsrelay.com/ Nickname afink
