Interface Configuration Guide 7705 SAR Interfaces
Edition: 01 3HE 11011 AAAC TQZZA 477
encap-type
Syntax encap-type {atm | cem | ipcp | ppp-auto | frame-relay | cisco-hdlc | hdlc}
no encap-type
Context config>port>tdm>ds1>channel-group
config>port>tdm>e1>channel-group
Description This command configures the encapsulation method used for the port on the 16-port T1/E1
ASAP Adapter card, 32-port T1/E1 ASAP Adapter card, 2-port OC3/STM1 Channelized
Adapter card, 4-port OC3/STM1 / 1-port OC12/STM4 Adapter card, 4-port DS3/E3 Adapter
card (DS3 ports only), or 4-port T1/E1 and RS-232 Combination module (T1/E1 ports only).
This parameter can be set on both access and network ports.
For access mode, the supported encapsulation types are atm, cem, frame-relay,
cisco-hdlc, hdlc, and ipcp. Table 28 lists the adapter cards and the corresponding
encapsulation types.
For network mode, only ppp-auto encapsulation is supported.
To change the encap-type, the channel group must first be deleted, then reconfigured with
the new encap-type.
Table 28 Adapter Cards and Encapsulation Types in Access Mode
Adapter Card Encapsulation Type
atm cem frame-
relay
cisco-
hdlc
hdlc ipcp
16-port T1/E1 ASAP Adapter
card, version 1
✓✓ ✓
16-port T1/E1 ASAP Adapter
card, version 2
✓✓✓ ✓ ✓✓
32-port T1/E1 ASAP Adapter
card
✓✓✓ ✓ ✓✓
2-port OC3/STM1 Channelized
Adapter card
✓✓ ✓
4-port OC3/STM1 / 1-port
OC12/STM4 Adapter card
✓
4-port DS3/E3 Adapter card
(DS3 ports only)
✓✓
4-port T1/E1 and RS-232
Combination module
✓✓