Hi ,
I am newbie here. I want to implement the mobile assistant service where a busy executives calls are atteneded by assistant. The problem is call transfer and call forward methods make only one of the number to ring. I am confused which protocol to use which will make both phones to ring at once. Please help me on this.
Hi rushikesh90
to implement this service i think you can use camel protocol to connect the call and transfer the call in addition to PRA,ISUP,or SIP to transfer the DTMF tones(such as * or 1 ,..etc) toward the assistant platform.
the B number should has T-CSI to trigger the assistant platform when the A number calls B number(Executive) then the assistant platform will initiate another call towards the second B number(Assistant) and based on the the DTMF tone will transfer the call.
from HLR side the home Rerouting function may be in need if you want to forward the sms.
Hi,
Thanks for your reply. I want to know is there any way I can achieve the same with MAP protocol?
what is your idea?i think you can do it by ISUP,but you need to add two trunk group one is incoming and another is outgoing so the call will be routed (intercept) through the platform and the server intiate the call,and you need to mark the profile of subscriber on HLR to provision the assistant service to the subscribers and in MSC route the call based on this flag(OS) becoz the subcriber will make a normal call without prefix.
I read somewhere that CAMEL latest phase is not available on every SCP, which may be problematic. That is why I was thinking of acheiving same fuctionality with some other protocol.
Hi Nutish,
I am somewhat new to implementation of protocols. Can you also clarify what is assistant platform ? How exactly I can transfer call and DTMF tones?
Hi,
Currently it is just an innovative Idea related to mobile assistant and once it is in place we will do some modification. But I never heard of Event Driven Mobile Assistant Protocol in ss7. I cant find much on it in google also. Can you tell me in some more details? We do not have products as such because this one will be the first product we will be developing.But the idea is more of to develop product on ss7 platform , GSM 2g etc.
Hi,
I have decided to implement the mpbile assistant with CAMEL and I have studied CAMEL. Can You clarify few things for me?
1.What do you exactly mean by assistant platform ..is it assistant gsmSSF/ assisting GMSC?
2.Again is there any way caller will know his call is routed to assistant?
3.Who implements the logic on MSC? Service provider or telecom operator ?
4.Who owns the SCP ?
Hi
I think you have chosen the complex way to implement the mobile assistant because you will need to transfer the call among two subscribers and you need ISUP or SIP connection for to carry the DTMF from user to your platform.
Q1:What do you exactly mean by assistant platform ..is it assistant gsmSSF/ assisting GMSC?
A1:assistant platform will be gsmSCF and the MSC who will trigger is gsmSSF.
Q2:Again is there any way caller will know his call is routed to assistant?
A2:I don't know exactly,but you can ply announcement to the caller indicating that the call will be routed to the assistant number.
Q3:Who implements the logic on MSC? Service provider or telecom operator ?
A3:The logic on MSC is standard and should be in line with 3GPP ,but the configuration from MSC side is necessary to trigger your platform.
Q4:Who owns the SCP ?
A4:The SCP should be owned by the telecom operator.
the most easiest way to use ISUP or SIP.
Hi Nutish,
Thanks for you detailed response.
I have just decided to do more research for the CAMEL way because I have never worked on SIP or ISUP. Can you give me some details about easy way with ISUP or SIP and also can you suggest some books for reading so that I will get some more knowledge about this.
review this flow if u r still interesting
http://www.telecomcubic.com/2014/11/28/mobile-assist-serviece/
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