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Grandstream HT-488


Maribel
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Hello guys,

 

I've been trying to register a grandstream handy tone 488 with my CS410, but every time I update it and reboot it with the SIP information, the register status says NO. Do I have to necesary plug an analog extension to the FXS to get this registered?

 

This is the SIP message of the CS410 and it is constantly repeating and there is no a SIP/2.0 OK message after that.

 

REGISTER sip:192.168.1.102 SIP/2.0

Via: SIP/2.0/UDP 192.168.1.100;branch=z9hG4bK3c54f49ffe0ab8bf

From: "Grand Stream" <sip:43@192.168.1.102;user=phone>;tag=3abfd8190bc9d8e9

To: <sip:43@192.168.1.102;user=phone>

Contact: *

Call-ID: d10af6bf7e3655d8@192.168.1.100

CSeq: 100 REGISTER

Expires: 0

User-Agent: Grandstream HT488 1.0.3.96 FXS

Max-Forwards: 70

Allow: INVITE,ACK,CANCEL,BYE,NOTIFY,REFER,OPTIONS,INFO,SUBSCRIBE

Content-Length: 0

 

Can you help me with this?

 

Thanks

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