2.4.3  
Connections to ITSP 
 

Overview  
HG 1500 supports connections to the Internet telephony service provider (ITSP) and thus the use of Internet telephony in HiPath 3000/5000 V6.0 SMR-09 or later, particularly DID-enabled DSL connections with phone number range. HG 1500 supports up to four ITSPs active simultaneously.
If you are using Internet telephony, the HG 1500 board is not allowed to be used as a DSL router. In this case, the connections to the ITSP must be set up over an external router.

Maximum number of simultaneous connections  
The maximum number of simultaneous connections to the ITSP depends on the number of HG 1500 boards and PDM modules set and the system used.

 Table 2-30   Maximum number of simultaneous connections to the ITSP
Feature/System  
 Maximum number  
When "IP/IP e2e payload via enterprise proxy" is used:  
 32  
When the B channels (DSP channels) of the HG 1500 are used:  
   
 •   Hipath 33x0 with 1 HG 1500 (HXGS3, HXGR3) and 1 PDM1 module
 16  
 •   Hipath 35x0 with 1 HG 1500 (HXGS3, HXGR3) and 1 PDM1 module
 16  
 •   Hipath 3800 with 1 HG 1500 (STMI2)
 32  

Number of gateway channels needed  
B channels (DSP channels) of the HG 1500 are required for connecting HiPath 3000/5000 to an ITSP. The following table shows their number depending on the call type used.

 Table 2-31   Number of required gateway channels to ITSP
 Call type  
 Number  
IP telephone/client to ITSP with "IP/IP e2e payload via enterprise proxy"  
 0  
Digital telephone to ITSP  
 1  
Analog telephone to ITSP  
 1  

HiPath 3000/5000 V9, Service Documentation, Issue 10   up Top
Disclaimer & Copyright   ID: P31003H3590S100017620   2014-02-27