Information Technology Reference
In-Depth Information
destination-pattern 9.......
command (for seven-digit dialing), the router automatically
strips the explicitly defined 9 digit before sending the call to the PSTN.
In the case of Example 6-10, stripping the 2 digit before sending the call to the PBX sys-
tem is not a desired behavior. Thus, the
no digit-strip
command prevents this automatic
digit-stripping process.
Note:
The automatic digit-stripping function is specific to POTS dial peers. VoIP dial
peers (discussed in the following section) do not automatically strip digits.
Configuring VoIP Dial Peers
In the scenario shown in Figure 6-7, the POTS dial peers now provide connectivity to the
legacy voice equipment. However, CME_A and ROUTER_B are divided by an IP WAN con-
nection that the legacy voice equipment must cross to achieve end-to-end communication.
FXS 0/0/0
10.1.1.2/24
T1 PRI 1/0
10.1.1.1/24
x1101
V
IP WAN
FXS 0/0/1
ROUTER_B
2XXX
Extensions
CME_A
x1102
Figure 6-7
Dial Peer Configuration Scenario
To accomplish this connectivity, you must use VoIP dial peers, because the call is crossing
an IP-based network. Example 6-11 configures the necessary VoIP dial peers on the
CME_A and ROUTER_B devices.
Key
To p i c
Example 6-11
Configuring VoIP Dial Peers
CME_A(config)#
dial-peer voice 2000 voip
CME_A(config-dial-peer)#
destination-pattern 2...
CME_A(config-dial-peer)#
session target ?
WORD A string specifying the session target
CME_A(config-dial-peer)#
session target ipv4:10.1.1.2
CME_A(config-dial-peer)#
codec ?
clear-channel Clear Channel 64000 bps (No voice capabilities: data transport
only)
g711alaw G.711 A Law 64000 bps
g711ulaw G.711 u Law 64000 bps
g722-48 G722-48K 64000 bps - Only supported for H.320<->H.323 calls
