SGIP extended protocol extends the supports to voice, fax, and e-mail based on SGIP. SGIP extended protocol is the interface protocol between IAP and IAP, IAP and SP, SMG and SP, SMG and GNS, and SMG and SMG.

• SGIP扩展协议是基于SGIP,扩展了对声音、传真、邮件等的支持,是IAP和IAP、IAP和SP、SMG和SP、SMG和GNS、以及SMG和SMG之间的接口协议。