The problem I have had with many SMS email gateways, is that they do not allow to reply back. Of course, email is a superior service over SMS, but does not really replace it ( - at least not until all the mobile phones have email access on them...). It would be nice if the SMS service would be available not only on GSM/GPRS/etc., but also on any telephone number in the world - or at least on every * number... ;-). (...including confirmation that the message was delivered). Since SMS is an application it should work over different signaling protocols in the same way. Then the user should not need to know what kind of device the other end is using in order to send an SMS and to receive SMSs back. Therefore, in my opinion, if an SMS type of service is to be implemented over SIP/IAX/h323/MCGP it should follow the appropriate GSM procedures quite closely, in order to make the interworking as easy as possible. There is a fresh draft of SMS for H.323. You can find it under http://standard.pictel.com/ftp/avc-site/0305_Gen/ with name H.450.sms_Draft_8May2003.zip As any of the H.450 features, it is very straightforward to implement... ;-) True, the above specification happens to use the ASN.1 coding (since it is for H.323), but it would be a simple change to carry the same procedures (including confirmations, etc.) over other types of messages and information elements/presentations, e.g. over IAX or SIP. The MGCP (or Megaco/H.248) implementation would not need SMS specific implementation, I think, because the * would terminate the SMS procedures and use the MGCP display/key/softkey primitives to implement a user interface on an MGCP compliant phone. --Markku -----Original Message----- From: asterisk-users-admin@lists.digium.com [mailto:asterisk-users-admin@lists.digium.com]On Behalf Of Gary Sent: Saturday, May 24, 2003 7:21 PM To: asterisk-users@lists.digium.com Subject: Re: [Asterisk-Users] advantages of a sip phone over Wildcard TDM400P solution On Sat, 24 May 2003 10:13:31 -0700 (PDT), Brett Schwarz wrote:> >--- Andy Powell <andy@beagles-den.demon.co.uk> wrote: >> >> I'm not sure if SMS is used in the US (please >> correct me if I'm wrong).. > >Yes, for the last several years... > >> however, since SIP does support messaging it would >> be nice to see >> that added. >> >> Andy >> >> On 25/05/2003 at 02:26 Gary wrote: >> >> >just glancing over that panasonic doc made me start >> thinking, that text >> >messaging (SMS) with asterisk would be >> interesting.... >> > >> >now for IAX/SIP/h323/MCGP is there anything in the >> specs about SMS >> >(Short Message Service) which Asterisk could >> implement ? > > >Are you talking about connecting to the mobile SMS >systems, or are you talking about having a SMS type >system for Asterisk? > >For the former, the easiest way to do this is to just >connect via an email hub. Most operators have >email-SMS gateways, where you can send email to >mobiles, which gets converted to SMS messages. > >For the latter, I believe Asterisk might have some >type of facility already. In phonecore, there is a >send text function, which would lead me to believe >that this was some sort of messaging >mechanism...although I have not tried it, so I can't >say for sure. > > --brettActually thats whats prompted the thought, never tried it, never even investigated it, but if it was to work with asterisk via an email system and a combination of SIP/IAX/h323/MCGP clients support messaging it would be a rather unique item, mind you it could also be an abused item, AND email it probably a better alternative anyway (when you think about it), . _______________________________________________ Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users -------------- next part -------------- A non-text attachment was scrubbed... Name: winmail.dat Type: application/ms-tnef Size: 3628 bytes Desc: not available Url : http://lists.digium.com/pipermail/asterisk-users/attachments/20030525/e8577ebe/winmail.bin
Robert Hajime Lanning
2003-May-25 04:25 UTC
[Asterisk-Users] SMS Service over SIP/IAX/h323/MCGP
Take a look at this company, they have a connection to almost every wireless/pager vendor including message delivery/reply via voice. http://www.mobilesys.com/ I am looking at their service for my work. <quote who="Markku Korpi">> The problem I have had with many SMS email gateways, is that they do not > allow to reply back. Of course, email is a superior service over SMS, but > does not really replace it ( - at least not until all the mobile phones > have > email access on them...). > > It would be nice if the SMS service would be available not only on > GSM/GPRS/etc., but also on any telephone number in the world - or at > least > on every * number... ;-). > (...including confirmation that the message was delivered). > > Since SMS is an application it should work over different signaling > protocols in the same way. Then the user should not need to know what kind > of device the other end is using in order to send an SMS and to receive > SMSs > back. > > Therefore, in my opinion, if an SMS type of service is to be implemented > over SIP/IAX/h323/MCGP it should follow the appropriate GSM procedures > quite > closely, in order to make the interworking as easy as possible. > > There is a fresh draft of SMS for H.323. > You can find it under http://standard.pictel.com/ftp/avc-site/0305_Gen/ > with > name H.450.sms_Draft_8May2003.zip > As any of the H.450 features, it is very straightforward to implement... > ;-) > > True, the above specification happens to use the ASN.1 coding (since it is > for H.323), but it would be a simple change to carry the same procedures > (including confirmations, etc.) over other types of messages and > information > elements/presentations, e.g. over IAX or SIP. > > The MGCP (or Megaco/H.248) implementation would not need SMS specific > implementation, I think, because the * would terminate the SMS procedures > and use the MGCP display/key/softkey primitives to implement a user > interface on an MGCP compliant phone. > > --Markku > > > -----Original Message----- > From: asterisk-users-admin@lists.digium.com > [mailto:asterisk-users-admin@lists.digium.com]On Behalf Of Gary > Sent: Saturday, May 24, 2003 7:21 PM > To: asterisk-users@lists.digium.com > Subject: Re: [Asterisk-Users] advantages of a sip phone over Wildcard > TDM400P solution > > > On Sat, 24 May 2003 10:13:31 -0700 (PDT), Brett Schwarz wrote: > >> >>--- Andy Powell <andy@beagles-den.demon.co.uk> wrote: >>> >>> I'm not sure if SMS is used in the US (please >>> correct me if I'm wrong).. >> >>Yes, for the last several years... >> >>> however, since SIP does support messaging it would >>> be nice to see >>> that added. >>> >>> Andy >>> >>> On 25/05/2003 at 02:26 Gary wrote: >>> >>> >just glancing over that panasonic doc made me start >>> thinking, that text >>> >messaging (SMS) with asterisk would be >>> interesting.... >>> > >>> >now for IAX/SIP/h323/MCGP is there anything in the >>> specs about SMS >>> >(Short Message Service) which Asterisk could >>> implement ? >> >> >>Are you talking about connecting to the mobile SMS >>systems, or are you talking about having a SMS type >>system for Asterisk? >> >>For the former, the easiest way to do this is to just >>connect via an email hub. Most operators have >>email-SMS gateways, where you can send email to >>mobiles, which gets converted to SMS messages. >> >>For the latter, I believe Asterisk might have some >>type of facility already. In phonecore, there is a >>send text function, which would lead me to believe >>that this was some sort of messaging >>mechanism...although I have not tried it, so I can't >>say for sure. >> >> --brett > > Actually thats whats prompted the thought, never tried it, never even > investigated it, but if it was to work with asterisk via an email > system and a combination of SIP/IAX/h323/MCGP clients support messaging > it would be a rather unique item, mind you it could also be an abused > item, AND email it probably a better alternative anyway (when you think > about it), > . > > > > _______________________________________________ > Asterisk-Users mailing list > Asterisk-Users@lists.digium.com > http://lists.digium.com/mailman/listinfo/asterisk-users > >