Hi, I have a VOIP-GSM 16 port Dinstar gateway installed. It has its local IP, SIM inserted and receiving signals but somehow it is not getting registered with Freeswitch as external profile. I have tried all the things found at different sources such as : https://wiki.freeswitch.org/wiki/Dinstar_GSM_gateway_FreeSwitch_HowTo <https://wiki.freeswitch.org/wiki/Dinstar_GSM_gateway_FreeSwitch_HowTo> http://www.voipon.co.uk/documents/DWG_with_FreeSwitch.pdf <https://wiki.freeswitch.org/wiki/Dinstar_GSM_gateway_FreeSwitch_HowTo> <https://wiki.freeswitch.org/wiki/Dinstar_GSM_gateway_FreeSwitch_HowTo> but no luck :( *Error at console* - Failed Registration with status Request Timeout [408] *SIP trace is as follows*: Freeswitch Server IP - *192.168.2.71* Gateway IP - *192.1.68.2.69* SUBSCRIBE sip:dwg2008@192.168.2.71 SIP/2.0 Via: SIP/2.0/UDP 192.168.2.69;branch=z9hG4bKf22aec329cf8392a03d1fb7ac5907373;rport From: <sip:dwg2008@192.168.2.71>;tag=d2e191310d53ca480a99c32d072b6907 To: <sip:dwg2008@192.168.2.71> Call-ID: 7901887bd57699805a51f44e8e162cd5@192.168.2.69 CSeq: 479122789 SUBSCRIBE Contact: <sip:dwg2008@192.168.2.69> Event: message-summary Supported: eventlist Expires: 1 Allow: INVITE, ACK, CANCEL, BYE, OPTIONS, INFO, UPDATE, NOTIFY, REFER Max-Forwards: 70 Accept: application/simple-message-summary Content-Length: 0 SIP/2.0 200 OK Via: SIP/2.0/UDP 192.168.2.71;rport=5060;branch=z9hG4bKXcrNrjD10j6BN From: <sip:dwg2008@192.168.2.71>;tag=5umvaME1a8N6 To: <sip:dwg2008@192.168.2.71>;tag=8b79a39dab9333d980ae172b0ddf0b10 Call-ID: c2ceb8fb9e2c2c1bfdba005ce2f3d223@192.168.2.69 CSeq: 797846101 NOTIFY Content-Length: 0 SIP/2.0 200 OK Via: SIP/2.0/UDP 192.168.2.71;rport=5060;branch=z9hG4bKyNHetDy4XUvyg From: <sip:dwg2008@192.168.2.71>;tag=DaCYUMXLeOft To: <sip:dwg2008@192.168.2.71>;tag=d2e191310d53ca480a99c32d072b6907 Call-ID: 7901887bd57699805a51f44e8e162cd5@192.168.2.69 CSeq: 797846103 NOTIFY Content-Length: 0 REGISTER sip:192.168.2.71 SIP/2.0 Via: SIP/2.0/UDP 192.168.2.69:5060 ;branch=z9hG4bKac7ee3cb94dbc6021702a40d789e140c;rport From: <sip:dwg2008@192.168.2.71>;tag=8c1a438aeba7d28784d1958a90940ec1 To: <sip:dwg2008@192.168.2.71> Call-ID: f58080d7fd4106bc3673e1295108eb09@192.168.2.69 CSeq: 479121941 REGISTER Contact: <sip:dwg2008@192.168.2.69:5060> Expires: 1800 User-Agent: DWG2000F Business 20231220 Allow: INVITE, ACK, CANCEL, BYE, OPTIONS, INFO, UPDATE, NOTIFY, REFER Max-Forwards: 70 Content-Length: 0 REGISTER sip:192.168.2.71 SIP/2.0 Via: SIP/2.0/UDP 192.168.2.69:5060 ;branch=z9hG4bKc2d768329e8115ca788edb78700b7db5;rport From: <sip:dwg2008@192.168.2.71>;tag=8c1a438aeba7d28784d1958a90940ec1 To: <sip:dwg2008@192.168.2.71> Call-ID: f58080d7fd4106bc3673e1295108eb09@192.168.2.69 CSeq: 479121942 REGISTER Contact: <sip:dwg2008@192.168.2.69:5060> Authorization: Digest username="dwg2008", realm="192.168.2.71", nonce="c4248cb2-60a7-11e7-b9ec-236b0b6c342f", uri="sip:192.168.2.71", response="c0b6a86fcb1553a891d79eaafc2951e5", algorithm=MD5, cnonce="6ea20a9604ad6faa602fa2e5802c9d72", qop=auth, nc=00000001 Expires: 1800 User-Agent: DWG2000F Business 20231220 Allow: INVITE, ACK, CANCEL, BYE, OPTIONS, INFO, UPDATE, NOTIFY, REFER Max-Forwards: 70 Content-Length: 0 -- Regards Deepika https://www.iiitd.edu.in/~deepikay/