On Nov 10, 2017, at 2:28 AM, Supun Madushanka <supun.12@cse.mrt.ac.lk> wrote:

Hi

I installl freeswitch debian jessie 8.9 server. i register 2 extension (1001,1002)using tryjs sip when i call one to other it response 

 SIP/2.0 422 Session Interval Too Small

   Via: SIP/2.0/WSS 7j9v0vaho6jt.invalid;branch=z9hG4bK2460026;received=123.231.122.157;rport=43751

   From: "jay" <sip:1002@webrtc01.resolve1.com>;tag=gc5ckl91vp

   To: <sip:1001@webrtc01.resolve1.com>;tag=mtB2UD7UDgpHB

   Call-ID: s8slq1jnq7o7ic92lbo6

   CSeq: 5609 INVITE

   User-Agent: FreeSWITCH-mod_sofia/1.9.0-1785-9d96741~64bit

   Accept: application/sdp

   Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, INFO, UPDATE, REGISTER, REFER, NOTIFY, PUBLISH, SUBSCRIBE

   Supported: timer, path, replaces

   Allow-Events: talk, hold, conference, presence, as-feature-event, dialog, line-seize, call-info, sla, include-session-description, presence.winfo, message-summary, refer

   Min-SE: 120

   Content-Length: 0

I change the below line

<param name="session-timeout" value="1800"/>
<param name="enable-timer" value="true"/>
<param name="minimum-session-expires" value="120"/>

but still get that respone

could you help me