TG100 SIP Trunk hostname character limit

Hello,

One my customer get a TG100 VoIP Gateway, and service provider using a long hostname for SIP trunk. TG100 is allowing type it to "hostname/IP" field but not saving all of characters. 

Example hostname: "90538111111-username-117906.sip.provider.com"

When I save and re-edit service provider setting only show me: "90538111111-username-"

Please increase the character limit of hostname field.

Thanks