Version 6.8 641 Mediant 2600 E-SBC
User's Manual 44. SBC Channel Capacity
44.2 Channel Capacity and Capabilities
The maximum number of supported SBC sessions is listed in ''Signaling-Media Sessions &
User Registrations'' on page 639. These SBC sessions also support SRTP and RTCP XR.
When DSP capabilities are required, the number of sessions that can use DSP capabilities
is reduced, as shown in the table below.
Table 44-2: Channel Capacity per Coder-Capability Profile
Session Coders Number of Sessions
From Coder
Profile
To Coder Without MPM8 With MPM8
1 Profile 1
375 600
2 Profile 1
275 600
2 Profile 2
225 600
1 Profile 2 + G.722
225 600
2 Profile 2 + G.722
175 575
1 Profile 2 + AMR-WB or SILK-NB or iLBC
175 525
2 Profile 2 + AMR-WB or SILK-NB or iLBC
150 450
1 Profile 2 + SILK-WB
100 350
2 Profile 2 + SILK-WB
100 300
Notes:
• Profile 1: G.711 at 20 ms only, with in-band signaling (in voice channel) and
Silence Suppression (no fax detection or T.38 support).
• Profile 2: G.711, G.726, G.729, G.723.1, AMR-NB, T.38 with fax detection, in-
band signaling, and Silence Compression.
• Acoustic Echo Suppressor reduces performance by about 30%. For more
information, contact your AudioCodes sales representative.
• MPM is the optional, Media Processing Module which provides additional DSPs,
allowing greater capacity