AudioCodes Mediant 600 - Announcement Server; Netann Interface

SIP User's Manual 426 Document #: LTRT-83310
Mediant 600 & Mediant 1000
CSeq: 2 BYE
Contact: <sip:600@10.8.58.6>
Supported: em,timer,replaces,path
Allow:REGISTER,OPTIONS,INVITE,ACK,CANCEL,BYE,NOTIFY,PRACK,REFER,IN
FO,SUBSCRIBE,UPDATE
User-Agent: Audiocodes-Sip-Gateway-Mediant 1000/v.5.40A.010.006
Content-Length: 0
16. SIP MESSAGE 16: 10.8.58.4:5060 -> 10.8.58.6:5060
SIP/2.0 200 OK
Via: SIP/2.0/UDP 10.8.58.6;branch=z9hG4bKacQypxnvl
From: <sip:600@10.8.8.10>;tag=1c201038291
To: <sip:conf100@10.8.58.4;user=phone>;tag=1c1673415884
Call-ID: 1008914574iYgW@10.8.58.6
CSeq: 2 BYE
Contact: <sip:conf100@10.8.58.4>
Supported: em,timer,replaces,path
Allow:REGISTER,OPTIONS,INVITE,ACK,CANCEL,BYE,NOTIFY,PRACK,REFER,IN
FO,SUBSCRIBE,UPDATE
Server: Audiocodes-Sip-Gateway-Mediant 1000/v.5.40A.010.006
Content-Length: 0
20.1.2 Announcement Server
The device supports playing and recording of announcements (local Voice Prompts or
HTTP streaming) and playing of Call Progress Tones over the IP network. Three different
methods are available for playing and recording announcements:

NetAnn for playing a single announcement (see 'NetAnn Interface' on page 426)

MSCML for playing single or multiple announcements and collecting digits (see
'MSCML Interface' on page 427)
20.1.2.1 NetAnn Interface
The device supports playing announcements using NetAnn format (according to RFC
4240).
20.1.2.1.1 Playing a Local Voice Prompt
To play a single local Voice Prompt, the Application Server (or any SIP user agent) sends a
regular SIP INVITE message with SIP URI that includes the NetAnn Announcement
Identifier name. For example:
INVITE sip:annc@audiocodes.com; play=file://12 SIP/2.0
The left part of the SIP URI includes the string ‘annc’. In the example above, the device
starts playing announcement number 12 from the internal Voice Prompts file (file:// and
http://localhost formats are supported). The NetAnn Announcement Identifier string is
configured using the ini file (parameter NetAnnAnncID) or Web interface (see 'Configuring
the IPmedia Parameters' on page 411). Sending a BYE request terminates the SIP session
and stops the playing of the announcement. If the played Voice Prompt reaches its end,
the device initiates a BYE message to notify the Application Server that the session has
ended.