Quintum Tenor DX Product Manual - page 18

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Chapter 1: Overview

Figure 1-6 Data Network Call Routing

Routing Table Options

There are four types of routing databases you can configure: Bypass Directory Numbers (BPN), 

Hunt Local Directory Numbers (Hunt LDN), Hop-Off Directory Numbers (HDN) and Static Routes.

Bypass Directory Numbers. Bypass Directory Numbers (BDN) are telephone numbers that are 

automatically routed directly from a line circuit to a trunk circuit (PSTN); they will not be routed 

VoIP. Some examples of bypass numbers include toll-free calls, emergency calls (i.e., 911), or high 

security calls. 

Hunt Local Directory Numbers. A Hunt Local Directory Number (Hunt LDN) is aphone number 

reachable through local Line Circuits. 

Hop-Off Directory Number. A Hop-off PBX call travels over IP, and then “hops” off into the pub-

lic network (PSTN) on the distant side to reduce or eliminate public toll charges (also known as 

Leaky Area Map). A Hop-Off Directory Number is routed over the IP to another Tenor location and 

then out to the Trunk circuit, possibly to the PSTN as a local call. 

Static Routes. Static Routes are used between networks and other H.323 devices that are not regis-

tered to the network through the Border Element (such as non-Quintum gateways). A static route 

associates endpoints (as represented by their IP address) with Directory Number patterns. 

Line

Circuits

Ethernet

PSTN B

Trunk

Circuits

Trunk

Circuits

PSTN A

Ethernet

(IP Network)

Tenor CMS

PBX

VOIP Call

Circuit

Call

Circuit

Call

R

POWER

ALERT

R

E

S

E

T

1

2

3

4

5

6

7

8

Line/Act

100

Line/Act

100

LAN 1    LAN 2

CONSOLE

D

I

A

G

Tenor DX