8820IP Phone User Manual_ SIP (V1.44)
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●
use service:
Enable/disable service by checking/clearing this box. To
make calls through SIP Proxy Server, please check this box; otherwise,
phone can only make IP-to IP calls.
●
register ttl :
IP phone will send a keep-alive registration message to SIP
proxy server every “
register ttl
” seconds. The minimum value is 10,
maximum value is 65535.
Default is 60.
●
service type
: This option is used to accommodate the miscellaneous
requirements of the system providers.
§
Common:
no special requirements
§
Huawei:
Use Huawei’s system
§
zte:
Use ZTE’s SIP system
§
harbour:
Use Harbour’s system
§
utstarcom:
Use UtstarCom’s SIP system
§
uptech:
Use Uptech’s system
§
keimen:
Use Keimen’s system
§
mediaring:
Use Mediaring’s SIP system
§
italkbb:
Use ItalkBB’s SIP system
