Specifications

Managing IP-PBX Integration Configuring Media Settings

ShoreTel Mobility Router Administration Guide 145

Configuring Media Settings

Use the Media tab to configure RTP media related settings:

 Select Inband DTMF Detection to enable the inband DTMF detection on the ShoreTel Mobility

Router. The preferred setting is disabled as the DTMF detection is typically performed on the PBX

or Gateway. However, if your PBX or gateway does not support RFC 2833 based DTMF relay,

enable this option.

 Select Ringback Detection to enable ringback tone detection. Some PBXs (for example,

ShoreTel) connect a call immediately and provide in-band tones for call progress indication. Select

this option if your PBX is setup to answer a call immediately.

 Select Initial Invite requires SDP for PBXs which require SDP to be sent in the Initial Invite

request message. If this option is selected, the Mobility Router always includes SDP when it sends

the initial invite request to the PBX. In some cases, that might require bridging RTP media through

the mobility router. If this option is not selected, the SDP is included in the initial invite only if it is

available at the invite time, otherwise it will be included in the ACK message. By default, this option

is enabled for Nortel, ShoreTel, Mitel, Alcatel and Avaya.

 Select Re-Invite requires SDP for PBXs which require SDP to be sent in the re-invite request

message. If this option is selected, the Mobility Router always includes SDP when it sends re-

invite request to the PBX. In some cases, that might require bridging RTP media bridging through

the mobility router. If this option is not selected, SDP is included in the re-invite only if it is available

when the mobility router generates re-invite message, otherwise the SDP will be included in the

ACK message. By default, this option is enabled for Nortel, ShoreTel, Mitel, Alcatel and Avaya.

 In the Default Payload (RFC 2833) field, type a value from 96 through 127. The default value is

101.

 The default value of 101 works with most IP-PBXs and gateways, including Cisco Call Manager.

For Avaya Communication Manager, set this value to 127. Refer to your IP-PBX documentation for

more information.

 Select the Voice Prompt Profile Name as created in Configuration > Voice > Advanced >

Voice Prompt Profiles. All users configured on this PBX will hear these prompts on their clients/

devices. The default profile type is default, which consists of factory default settings/prompts.

 Voice Activity Detection (VAD), also known as speech activity detection, enables speech

processing when the presence or absence of human speech is detected. The main uses of VAD

are in speech coding and speech recognition. The VAD can avoid unnecessary coding/

transmission of silence packets, thus saving on computation and network bandwidth.

Note

VAD is disabled when using ShoreTel IP-PBX configuration.