Linksys RTP300 User Guide - Page 63

Internal, Proxy, Server, Phone 1, RTP Path

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SIP Trunking and Hunt Groups on the SPA8000 The following figure shows a simplified logical block diagram of the SPA8000 with the SIP Trunking feature. Phone 1 L1 Phone 2 L2 Phone 3 L3 Phone 4 L4 Phone 5 L5 Phone 6 L6 Phone 7 L7 Phone 8 L8 RTP Path SIP Path ITSP T1 Internal T2 Proxy Server T3 T4 • SIP Path: As a standalone line, the SIP User Agent (SIP UA) exchanges signaling directly with the ITSP equipment. As a trunk line, the Line UA exchanges signaling with the internal proxy server only. The Internal Proxy Server handles all SIP signalling between both ends of the call, from call establishment to termination. • RTP Path: Whether the line is standalone or a member of a trunk group, the Line UA exchanges RTP packets directly with the ITSP equipment. NOTE: Although the figure shows only one ITSP account, in fact each standalone line and each Trunk Group can be configured with a different ITSP (with some limitations applied). Linksys ATA Administration Guide 63

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Linksys ATA Administration Guide
63
SIP Trunking and Hunt Groups on the SPA8000
The following figure shows a simplified logical block diagram of the SPA8000 with the SIP
Trunking feature.
•
SIP Path: As a standalone line, the SIP User Agent (SIP UA) exchanges signaling directly
with the ITSP equipment. As a trunk line, the Line UA exchanges signaling with the
internal proxy server only. The Internal Proxy Server handles all SIP signalling between
both ends of the call, from call establishment to termination.
•
RTP Path: Whether the line is standalone or a member of a trunk group, the Line UA
exchanges RTP packets directly with the ITSP equipment.
NOTE: Although the figure shows only one ITSP account, in fact each standalone line and
each Trunk Group can be configured with a different ITSP (with some limitations applied).
Phone 1
Phone 2
Phone 3
Phone 4
Phone 5
Phone 6
Phone 7
Phone 8
L1
L2
L3
L4
L5
L6
L7
L8
T1
T2
T3
T4
Internal
RTP Path
SIP Path
ITSP
Proxy
Server