Grandstream Networks GHP620 Administration Guide

Account Call Settings
● Enabled and Forced
● Optional
The default setting is “No”.
SRTP Key Length
Allows users to specify the length of the SRTP calls. Available options are:
● AES 128&256 bit
● AES 128 bit
● AES 256 bit
Default setting is AES 128&256 bit
Crypto Life Time
Enable or disable the crypto lifetime when using SRTP. If users set to disable this option, phone does
not add the crypto lifetime to SRTP header. The default setting is “Yes”.
RTCP Mode
Configure RTCP port negotiation rules.
● Default: Use the traditional RTCP port, which is "RTP port+1".
● Negotiate RTCP Port: Use attribute RTCP to negotiate.
● RTCP Mux: The caller actively negotiates the RTCP port and indicates RTCP Mux at the same
time.
● RTCP Mux Only: The caller forces RTCP Mux, generated by the local media port only apply for
RTP port.
RTCP Keep-Alive Method
Configures the RTCP channel keep-alive packet type.
● Receiver Report: The RTCP channel will sends "receiver report+source description+RTCP
extension" as keep-alive data.
● Sender Report: The RTCP channel will sends "Sender report+source description+ RTCP
extension" as keep-alive data.
RTP Keep-Alive Method
Configures the RTP channel keep-alive packet type.
● No: No data will be sent
● RTP Version 1: The wrong version infor "1" will be carried when sending RTP data packets.
Symmetric RTP
Configures whether Symmetric RTP is used or not. Symmetric RTP means that the UA uses the same
socket/port for sending and receiving the RTP stream. The default setting is “No”.
RTP Timeout (s)
Configures the RTP timeout of the phone. If the phone does not receive the RTP packet within the
specified RTP time, the call will be automatically disconnected. The default range is 0 and 6-600. If
set to 0, the phone will not hang up the call automatically.
General
Key as Send Pressing the selected key will immediately dial out.
No Key Entry Timeout
Configures the timeout (in seconds) for no key entry.
If no key has been pressed after the timeout, the collected digits will be sent out.
Send Anonymous If set to "Yes", the "From" header in outgoing INVITE messages will be set to anonymous.
Anonymous Call Rejection If set to "Yes", anonymous calls will be rejected.
Enable Call Waiting
Enables the call waiting feature. If set to "No", new incoming calls will be rejected after the call is
established.

Grandstream Networks GHP620 Specifications

General

Brand	Grandstream Networks
Model	GHP620
Category	Telephone
Language	English