[Freeswitch-users] Does freeswitch support SIP-T/SIP-T?

[Moises Silva]

On Sun, Mar 24, 2013 at 9:43 AM, xiaofengcanyuexp at 163.com <
xiaofengcanyuexp at 163.com> wrote:

>
> Dear freeswitch support
>
> I have been studying freeswitch for a few weeks. I will be planning to
> take the freeswitch as a signal gateway connecting PSTN(ISUP) and SIP.
> It needs convert the ISUP to SIP based on RFC3372/RFC3204/RFC3398  and
> vice versa.
> I notice in the mime_type.cfg supporting applicaiton/ISUP, but I don't
> find any code in sofia(SIP) module to decode/encode the application/ISUP.
> My question is: Does freeswitch support to do the signalling gateway
> connecting ISUP(freeTDM module also has the MTP layer support) and
> SIP(SIP-T/SIP-I)? If yes, could you let me know how it works?
>
>
Hello Windy,

There is no support in FreeSWITCH for SIP-I or SIP-T

ISUP to SIP conversion is supported using Sangoma's SS7 module based on
Trillium SS7 stack. Note this is licensed, not open source (this is true
for all the MTP layers and ISUP, SCCP etc).

Sangoma uses a raw/proprietary mechanism to pass-thru complete IAM messages
in a SIP network, it is a crude embedding of the IAM message encoded using
base64, within SIP header. We are aware this is crude and by far does not
cover all cases, but it was done as quick and dirty way to avoid
implementing the whole SIP-I/SIP-T spec and at the same time not miss any
IAM information.

In all honesty we've had not seen many requests for it so that has kept us
from doing the implementation work.

Cheers,

*Moises Silva
**Manager, Software Engineering***

msilva at sangoma.com

Sangoma Technologies

100 Renfrew Drive, Suite 100, Markham, ON L3R 9R6 Canada


t.   +1 800 388 2475 (N. America)

t.   +1 905 474 1990 x128

f.   +1 905 474 9223



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