Grandstream Networks GHP611 Administration Guide

Codec Settings
Enable Session Timer
Configures whether to enable session timer function. It enables SIP sessions to be periodically
“refreshed” via a SIP request (UPDATE, or re-INVITE). If there is no refresh via an UPDATE or re-
INVITE message, the session will be terminated once the session interval expires. If set to “Yes”, the
phone will use the related parameters when sending session timer according to “Session Expiration”.
If set to “No”, session timer will be disabled.
The default setting is “No”.
Session Expiration
Session Expiration is the time (in seconds) where the session is considered timed out, provided no
successful session refresh transaction occurs beforehand.
The default setting is 180. The valid range is from 90 to 64800.
Min-SE
The minimum session expiration (in seconds). The default value is 90 seconds. The valid range is from
90 to 64800.
Caller Request Timer
If set to “Yes” and the remote party supports session timers, the phone will use a session timer when it
makes outbound calls.
The default setting is “No”.
Callee Request Timer
If set to “Yes” and the remote party supports session timers, the phone will use a session timer when it
receives inbound calls.
The default setting is “No”.
Force Timer
If set to “Yes”, the phone will use the Session Timer even if the remote party does not support this
feature. Otherwise, Session Timer is enabled only when the remote party supports it.
The default setting is “No”.
UAC Specify Refresher
As a caller, select UAC to use the phone as the refresher, or select UAS to use the callee or proxy
server as the refresher. When set to “Omit”, the refresh object is not specified.
The default setting is “UAC”.
UAS Specify Refresher
As a callee, select UAC to use caller or proxy server as the refresher, or select UAS to use the phone
as the refresher.
The default setting is “UAC”.
Force INVITE
Select “Yes” to force using the INVITE method to refresh the session timer.
The default setting is “No”.
Audio
Preferred Vocoder
(Choice 1 – 8)
Multiple vocoder types are supported on the phone, the vocoders in the list is a higher preference.
Users can configure vocoders in a preference list that is included with the same preference order in
SDP message.
● Opus
● G722
● PCMU
● PCMA
● G.723.1
● G.729.1
● iLBC
● G.726-32
Codec Negotiation Priority
Configures the phone to use which codec sequence to negotiate as the callee. When set to “Caller”, the
phone negotiates by SDP codec sequence from received SIP Invite. When set to “Callee”, the phone
negotiates by audio codec sequence on the phone. The default setting is “Callee”.

Grandstream Networks GHP611 Specifications

General

Brand	Grandstream Networks
Model	GHP611
Category	Network Hardware
Language	English