NEC SL2100 - Section 5 SUPPORTED SIP TRUNKING FUNCTIONS

• RTP/RTCP
• UDP
• IPv4
• T.38 (draft-ietf-sipping-realtimefax-02.txt)
4.3 Supported SIP Methods
The following SIP methods are supported with the NEC SL2100 system:
• REGISTER
• INVITE
• BYE
• CANCEL
• ACK
• PRACK
• Response 1xx 2xx, 3xx, 4xx, 5xx, 6xx
The following features are available:
• Support the 401 response for the Initial Invite
If 401 message is sent for the Initial Invite, with previous software, the system cannot respond to the
message correctly.
• Support the 401/407 response for the Invite of Session Timer
If 401/407 response is sent for the invite of Session Timer, the system can send the Invite message
with Authentication header.
• Support the 128 byte size of Nonce max value sent by the 401/407 message
The Nonce maximum size sent by the 401/407 message is expanded to 128 byte. With previous
software, 64 byte size can be received.
4.4 Supported SIP Trunking Options
The options listed below are supported with SIP Trunking.
• 100rel
• Session Timer
• Early Media
4.5 Supported CODEC
SIP Trunking can use the following CODECs.
• G.729. Low bandwidth requirement, and is used on most Wide Area Network links.
- VAD
- VIF size 20ms~30ms
• G.711 – High bandwidth requirement – usually used on Local Area Networks.
• G.722 – This CODEC is useful in fixed network, Voice over IP applications, where the required
bandwidth is typically not prohibitive.
• G.726 – is an ITU-T ADPCM speech coded standard covering the transmission of voice at rates of
16, 24, 32, and 40Kbps.
SECTION 5 SUPPORTED SIP TRUNKING FUNCTIONS
The functions in this section are supported by NEC SL2100 SIP Trunking.
SL2100
ISSUE 1.0
7-4
SIP Trunking