User's Manual
FIRMWARE VERSION 1.0.0.2     GXW42XX USER MANUAL      Page 12 of 52 
GXW42XXFEATURES
The GXW4000 series is a next generation IP voice gateway that is interoperable and compatible with 
leading IP-PBXs, Softswitches and SIP platforms. The GXW4200 series FXS gateway is auto-
configurable, remotely manageable and scalable. The GXW4200 series gateways come in three models 
- the GXW4216, GXW4224 and GXW4036, each offering superb voice quality, traditional telephony 
functionality, easy deployment, and 16, 24 and 32 FXS ports respectively. Each model features flexible 
dialing plans, integrated call routing to support a pure IP network call and an external power supply. 
SOFTWAREFEATURESOVERVIEW
•  16, 24 or 32 FXS ports 
•  one RJ-45 Ethernet port 
•  4 configurable SIP profiles) 
•  Supports Voice Codecs: 
G711(a/µ, Annex I & II), G723.1A, G726 (ADPCM with 16/24/32/40 bit rates), G729 A/B, iLBC 
•  T.38 Fax 
•  Comprehensive Dial Plan support for Outgoing calls. 
•  G.168 Echo Cancellation 
•  Voice Activation Detection (VAD), Comfort Noise Generation (CNG), and Packet Loss 
Concealment (PLC) 
•  Supports PSTN/PBX analog telephone sets or analog trunks 
TABLE 3: GXW42XX SOFTWARE FEATURES 
  GXW4216  GXW4224  GXW4232 
Telephone Interfaces 
16 FXS ports  24 FXS ports  32 FXS ports 
SIP Provisioning 
16 SIP accounts, 4 profiles  24 SIP accounts, 4 profiles  32 SIP accounts, 4 profiles
Network Interface 
10M/100 Mbps, RJ-45  10M/100 Mbps, RJ-45  10M/100 Mbps, RJ-45 
Number of 
Concurrent Calls 
(except when using 
SRTP) 
4 Concurrent Calls  8 Concurrent Calls  24 Concurrent Calls, 










