Cisco WS-X6066-SLB-APC - Content Switching Module Software Manual page 821

Chapter 44 Configuring a VoIP Network
The 24-port FXS analog interface module features are listed in
To configure the analog station interfaces, see the
Table 44-1 24-Port FXS Analog Interface Module Features
Digital Signal Processing Per Port
G.711 and G.729 voice encoding
Silence suppression; voice activity detection
Comfort noise generation
Ringer, software programmable frequency and cadence, based on country
DTMF
Signaling, loop start
Line echo cancellation (32 ms)
Impedance (600 ohms)
Programmable analog gain, signaling timers
Fax passthrough
SPAN
FXS Interface Features
Address signaling formats: In-band DTMF
Signaling formats: Loop start
Ringing tone: Programmable
Ringing voltage: Programmable, based on country
Ringing frequency: Programmable, based on country
Distance: 500-ohms maximum loop
1. DTMF = dual tone multifrequency
2. SPAN = Switched Port Analyzer
Analog Trunk Gateway
Cisco access analog trunk gateways allow the IP PBX to connect to the PSTN or PBX. The gateway
supports up to eight trunks to the PSTN and appears like a phone to the trunk lines coming from the
PSTN. Using this gateway, the IP PBX places an IP call through the PSTN. Similar to the analog station
gateway, the analog trunk gateway provides line echo cancellation and dual tone multifrequency
(DTMF) tone generation and detection. The analog trunk gateway does not provide ring voltage as it is
not connected to POTS end devices such as POTS-phones or fax machines. The analog trunk gateway
requires an IP address, is registered with Cisco CallManager in its domain, and is managed by Cisco
CallManager.
To configure the analog trunk gateways, refer to the documentation that shipped with the gateway.
78-13315-02
1
detection
2
or port mirroring support
"Configuring VoIP on a Switch" section on page
Catalyst 6000 Family Software Configuration Guide—Releases 6.3 and 6.4
Understanding How a VoIP Network Works
Table 44-1.
44-9.
44-5